55737923 has 4 divisors (see below), whose sum is σ = 55811928. Its totient is φ = 55663920.

The previous prime is 55737919. The next prime is 55737937. The reversal of 55737923 is 32973755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32973755 = 5 ⋅6594751.

It is a cyclic number.

It is not a de Polignac number, because 55737923 - 2² = 55737919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55737943) 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, 35861 + ... + 37382.

It is an arithmetic number, because the mean of its divisors is an integer number (13952982).

Almost surely, 2^55737923 is an apocalyptic number.

55737923 is a deficient number, since it is larger than the sum of its proper divisors (74005).

55737923 is an equidigital number, since it uses as much as digits as its factorization.

55737923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74004.

The product of its digits is 198450, while the sum is 41.

The square root of 55737923 is about 7465.7834819930. The cubic root of 55737923 is about 381.9884753885.

The spelling of 55737923 in words is "fifty-five million, seven hundred thirty-seven thousand, nine hundred twenty-three".