56201556 has 12 divisors (see below), whose sum is σ = 131136992. Its totient is φ = 18733848.

The previous prime is 56201533. The next prime is 56201573. The reversal of 56201556 is 65510265.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×56201556² = 6317229793642272, 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, 2341720 + ... + 2341743.

Almost surely, 2^56201556 is an apocalyptic number.

It is an amenable number.

56201556 is an abundant number, since it is smaller than the sum of its proper divisors (74935436).

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

56201556 is a wasteful number, since it uses less digits than its factorization.

56201556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683470 (or 4683468 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 56201556 is about 7496.7697043460. The cubic root of 56201556 is about 383.0446902520.

The spelling of 56201556 in words is "fifty-six million, two hundred one thousand, five hundred fifty-six".