56531137 has 16 divisors (see below), whose sum is σ = 67858560. Its totient is φ = 46524672.

The previous prime is 56531107. The next prime is 56531149. The reversal of 56531137 is 73113565.

56531137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56531137 - 2⁷ = 56531009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56531099 and 56531108.

It is not an unprimeable number, because it can be changed into a prime (56531107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2533 + ... + 10930.

It is an arithmetic number, because the mean of its divisors is an integer number (4241160).

Almost surely, 2^56531137 is an apocalyptic number.

It is an amenable number.

56531137 is a deficient number, since it is larger than the sum of its proper divisors (11327423).

56531137 is a wasteful number, since it uses less digits than its factorization.

56531137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13512.

The product of its digits is 9450, while the sum is 31.

The square root of 56531137 is about 7518.7191063372. The cubic root of 56531137 is about 383.7919902982.

The spelling of 56531137 in words is "fifty-six million, five hundred thirty-one thousand, one hundred thirty-seven".