82552780 has 24 divisors (see below), whose sum is σ = 175738752. Its totient is φ = 32568192.

The previous prime is 82552669. The next prime is 82552781. The reversal of 82552780 is 8725528.

It is a super-2 number, since 2×82552780² = 13629922971456800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82552781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26812 + ... + 29731.

It is an arithmetic number, because the mean of its divisors is an integer number (7322448).

Almost surely, 2^82552780 is an apocalyptic number.

It is an amenable number.

82552780 is an abundant number, since it is smaller than the sum of its proper divisors (93185972).

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

82552780 is a wasteful number, since it uses less digits than its factorization.

82552780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56625 (or 56623 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 82552780 is about 9085.8560411224. The cubic root of 82552780 is about 435.4221998590.

The spelling of 82552780 in words is "eighty-two million, five hundred fifty-two thousand, seven hundred eighty".