565215500 has 24 divisors (see below), whose sum is σ = 1234431744. Its totient is φ = 226086000.

The previous prime is 565215449. The next prime is 565215517. The reversal of 565215500 is 5512565.

It is a super-2 number, since 2×565215500² = 638937122880500000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564716 + ... + 565715.

It is an arithmetic number, because the mean of its divisors is an integer number (51434656).

Almost surely, 2^565215500 is an apocalyptic number.

565215500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

565215500 is an abundant number, since it is smaller than the sum of its proper divisors (669216244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

565215500 is a wasteful number, since it uses less digits than its factorization.

565215500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130450 (or 1130438 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 565215500 is about 23774.2612924145. The cubic root of 565215500 is about 826.8080334749.

The spelling of 565215500 in words is "five hundred sixty-five million, two hundred fifteen thousand, five hundred".