56620137 has 12 divisors (see below), whose sum is σ = 87819216. Its totient is φ = 32354280.

The previous prime is 56620129. The next prime is 56620153. The reversal of 56620137 is 73102665.

It is not a de Polignac number, because 56620137 - 2³ = 56620129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56620177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192439 + ... + 192732.

It is an arithmetic number, because the mean of its divisors is an integer number (7318268).

Almost surely, 2^56620137 is an apocalyptic number.

It is an amenable number.

56620137 is a deficient number, since it is larger than the sum of its proper divisors (31199079).

56620137 is a wasteful number, since it uses less digits than its factorization.

56620137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385188 (or 385181 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 56620137 is about 7524.6353400015. The cubic root of 56620137 is about 383.9932927973.

The spelling of 56620137 in words is "fifty-six million, six hundred twenty thousand, one hundred thirty-seven".