56118137 has 4 divisors (see below), whose sum is σ = 58558080. Its totient is φ = 53678196.

The previous prime is 56118133. The next prime is 56118143. The reversal of 56118137 is 73181165.

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 a cyclic number.

It is not a de Polignac number, because 56118137 - 2² = 56118133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56118131) 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, 1219937 + ... + 1219982.

It is an arithmetic number, because the mean of its divisors is an integer number (14639520).

Almost surely, 2^56118137 is an apocalyptic number.

It is an amenable number.

56118137 is a deficient number, since it is larger than the sum of its proper divisors (2439943).

56118137 is a wasteful number, since it uses less digits than its factorization.

56118137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439942.

The product of its digits is 5040, while the sum is 32.

The square root of 56118137 is about 7491.2039753300. The cubic root of 56118137 is about 382.8550808678.

The spelling of 56118137 in words is "fifty-six million, one hundred eighteen thousand, one hundred thirty-seven".