56221136 has 10 divisors (see below), whose sum is σ = 108928482. Its totient is φ = 28110560.

The previous prime is 56221079. The next prime is 56221141. The reversal of 56221136 is 63112265.

It can be written as a sum of positive squares in only one way, i.e., 45697600 + 10523536 = 6760^2 + 3244^2 .

It is a super-2 number, since 2×56221136² = 6321632266260992, 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 as a sum of consecutive naturals, namely, 1756895 + ... + 1756926.

Almost surely, 2^56221136 is an apocalyptic number.

It is an amenable number.

56221136 is a deficient number, since it is larger than the sum of its proper divisors (52707346).

56221136 is a wasteful number, since it uses less digits than its factorization.

56221136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513829 (or 3513823 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 56221136 is about 7498.0754864165. The cubic root of 56221136 is about 383.0891679305.

The spelling of 56221136 in words is "fifty-six million, two hundred twenty-one thousand, one hundred thirty-six".