56737231 has 4 divisors (see below), whose sum is σ = 56859192. Its totient is φ = 56615272.

The previous prime is 56737207. The next prime is 56737277. The reversal of 56737231 is 13273765.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13273765 = 5 ⋅2654753.

It is a cyclic number.

It is not a de Polignac number, because 56737231 - 2⁵ = 56737199 is a prime.

It is a super-2 number, since 2×56737231² = 6438226763094722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56737201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60280 + ... + 61213.

It is an arithmetic number, because the mean of its divisors is an integer number (14214798).

Almost surely, 2^56737231 is an apocalyptic number.

56737231 is a deficient number, since it is larger than the sum of its proper divisors (121961).

56737231 is a wasteful number, since it uses less digits than its factorization.

56737231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121960.

The product of its digits is 26460, while the sum is 34.

The square root of 56737231 is about 7532.4120306845. The cubic root of 56737231 is about 384.2578179464.

The spelling of 56737231 in words is "fifty-six million, seven hundred thirty-seven thousand, two hundred thirty-one".