245 (number) explained

245 (two hundred [and] forty-five) is the natural number following 244 and preceding 246.

Additionally, 245 is:

• a composite number.
• a stella octangula number.
• palindromic in bases 34 (77₃₄) and 48 (55₄₈)^[1]
• a Harshad number in bases 7, 9, 11, 15, 31, 35, 36 (and 14 other bases).^[2]
• the aliquot sum of any of these numbers: 723, 1195, 2563, 3859,^[3]
• part of the 97-aliquot tree. 4624, 4893, 2595, 1581, 723, 245,

Notes and References

1. Web site: 2017-11-01. Double Base Palindrome. 2021-09-13. GeeksforGeeks. en-us.
2. Web site: 2016-11-19. Harshad (Or Niven) Number. 2021-09-13. GeeksforGeeks. en-us.
3. Web site: Mathar. Richard J.. 21 March 2014. Illustration of Aliquot Sequence Mergers. live. https://web.archive.org/web/20210802204605/https://www2.mpia-hd.mpg.de/~mathar/public/mathar20100305.pdf. 2 August 2021. 2 August 2021. oeis.org. PDF.