556056540 has 72 divisors (see below), whose sum is σ = 1816459008. Its totient is φ = 136874880.

The previous prime is 556056511. The next prime is 556056583. The reversal of 556056540 is 45650655.

It is a happy number.

556056540 is a `hidden beast` number, since 5 + 5 + 60 + 56 + 540 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 556056495 and 556056504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116476 + ... + 121155.

Almost surely, 2^556056540 is an apocalyptic number.

It is an amenable number.

556056540 is an abundant number, since it is smaller than the sum of its proper divisors (1260402468).

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

556056540 is a wasteful number, since it uses less digits than its factorization.

556056540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237659 (or 237654 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 556056540 is about 23580.8511296772. The cubic root of 556056540 is about 822.3177239799.

The spelling of 556056540 in words is "five hundred fifty-six million, fifty-six thousand, five hundred forty".