56615151 has 16 divisors (see below), whose sum is σ = 80110944. Its totient is φ = 35441664.

The previous prime is 56615131. The next prime is 56615159. The reversal of 56615151 is 15151665.

It is not a de Polignac number, because 56615151 - 2⁶ = 56615087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56615159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27411 + ... + 29403.

It is an arithmetic number, because the mean of its divisors is an integer number (5006934).

Almost surely, 2^56615151 is an apocalyptic number.

56615151 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

56615151 is a deficient number, since it is larger than the sum of its proper divisors (23495793).

56615151 is a wasteful number, since it uses less digits than its factorization.

56615151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570.

The product of its digits is 4500, while the sum is 30.

The square root of 56615151 is about 7524.3040209710. The cubic root of 56615151 is about 383.9820209139.

The spelling of 56615151 in words is "fifty-six million, six hundred fifteen thousand, one hundred fifty-one".