56505137 has 16 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 49627200.

The previous prime is 56505131. The next prime is 56505151. The reversal of 56505137 is 73150565.

It is a cyclic number.

It is not a de Polignac number, because 56505137 - 2⁶ = 56505073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56505131) 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, 25712 + ... + 27822.

It is an arithmetic number, because the mean of its divisors is an integer number (3991680).

Almost surely, 2^56505137 is an apocalyptic number.

It is an amenable number.

56505137 is a deficient number, since it is larger than the sum of its proper divisors (7361743).

56505137 is a wasteful number, since it uses less digits than its factorization.

56505137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 56505137 is about 7516.9898895768. The cubic root of 56505137 is about 383.7331429534.

The spelling of 56505137 in words is "fifty-six million, five hundred five thousand, one hundred thirty-seven".