56001556 has 12 divisors (see below), whose sum is σ = 105541492. Its totient is φ = 25846848.

The previous prime is 56001541. The next prime is 56001577. The reversal of 56001556 is 65510065.

It can be written as a sum of positive squares in 2 ways, for example, as 23328900 + 32672656 = 4830^2 + 5716^2 .

It is a super-2 number, since 2×56001556² = 6272348548842272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538425 + ... + 538528.

Almost surely, 2^56001556 is an apocalyptic number.

It is an amenable number.

56001556 is a deficient number, since it is larger than the sum of its proper divisors (49539936).

56001556 is a wasteful number, since it uses less digits than its factorization.

56001556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076970 (or 1076968 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 56001556 is about 7483.4187374488. The cubic root of 56001556 is about 382.5897799989.

The spelling of 56001556 in words is "fifty-six million, one thousand, five hundred fifty-six".