56197137 has 4 divisors (see below), whose sum is σ = 74929520. Its totient is φ = 37464756.

The previous prime is 56197133. The next prime is 56197151. The reversal of 56197137 is 73179165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56197137 - 2² = 56197133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56197095 and 56197104.

It is not an unprimeable number, because it can be changed into a prime (56197133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9366187 + ... + 9366192.

It is an arithmetic number, because the mean of its divisors is an integer number (18732380).

Almost surely, 2^56197137 is an apocalyptic number.

It is an amenable number.

56197137 is a deficient number, since it is larger than the sum of its proper divisors (18732383).

56197137 is a wasteful number, since it uses less digits than its factorization.

56197137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18732382.

The product of its digits is 39690, while the sum is 39.

The square root of 56197137 is about 7496.4749716117. The cubic root of 56197137 is about 383.0346506791.

The spelling of 56197137 in words is "fifty-six million, one hundred ninety-seven thousand, one hundred thirty-seven".