515860056 has 64 divisors (see below), whose sum is σ = 1439340000. Its totient is φ = 171186048.

The previous prime is 515860027. The next prime is 515860061. The reversal of 515860056 is 650068515.

It is a super-2 number, since 2×515860056² = 532223194752646272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 515860056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44250 + ... + 54678.

Almost surely, 2^515860056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515860056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719670000).

515860056 is an abundant number, since it is smaller than the sum of its proper divisors (923479944).

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

515860056 is a wasteful number, since it uses less digits than its factorization.

515860056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10673 (or 10663 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 515860056 is about 22712.5528287773. The cubic root of 515860056 is about 802.0054145235.

The spelling of 515860056 in words is "five hundred fifteen million, eight hundred sixty thousand, fifty-six".