52439923 has 4 divisors (see below), whose sum is σ = 52575120. Its totient is φ = 52304728.

The previous prime is 52439911. The next prime is 52439927. The reversal of 52439923 is 32993425.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52439923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52439927) 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, 67015 + ... + 67792.

It is an arithmetic number, because the mean of its divisors is an integer number (13143780).

Almost surely, 2^52439923 is an apocalyptic number.

52439923 is a deficient number, since it is larger than the sum of its proper divisors (135197).

52439923 is a wasteful number, since it uses less digits than its factorization.

52439923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135196.

The product of its digits is 58320, while the sum is 37.

The square root of 52439923 is about 7241.5414795470. The cubic root of 52439923 is about 374.3007365960.

The spelling of 52439923 in words is "fifty-two million, four hundred thirty-nine thousand, nine hundred twenty-three".