56501655 has 24 divisors (see below), whose sum is σ = 105163632. Its totient is φ = 25828992.

The previous prime is 56501651. The next prime is 56501681. The reversal of 56501655 is 55610565.

It is not a de Polignac number, because 56501655 - 2² = 56501651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56501651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37702 + ... + 39171.

It is an arithmetic number, because the mean of its divisors is an integer number (4381818).

Almost surely, 2^56501655 is an apocalyptic number.

56501655 is a deficient number, since it is larger than the sum of its proper divisors (48661977).

56501655 is a wasteful number, since it uses less digits than its factorization.

56501655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76895 (or 76888 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 56501655 is about 7516.7582773427. The cubic root of 56501655 is about 383.7252605653.

The spelling of 56501655 in words is "fifty-six million, five hundred one thousand, six hundred fifty-five".