52131623 has 4 divisors (see below), whose sum is σ = 53403168. Its totient is φ = 50860080.

The previous prime is 52131587. The next prime is 52131671. The reversal of 52131623 is 32613125.

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-52131623 is a prime.

It is a super-2 number, since 2×52131623² = 5435412233228258, 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 (52131683) 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, 635711 + ... + 635792.

It is an arithmetic number, because the mean of its divisors is an integer number (13350792).

Almost surely, 2^52131623 is an apocalyptic number.

52131623 is a deficient number, since it is larger than the sum of its proper divisors (1271545).

52131623 is a wasteful number, since it uses less digits than its factorization.

52131623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271544.

The product of its digits is 1080, while the sum is 23.

The square root of 52131623 is about 7220.2231959961. The cubic root of 52131623 is about 373.5657761837.

Adding to 52131623 its reverse (32613125), we get a palindrome (84744748).

The spelling of 52131623 in words is "fifty-two million, one hundred thirty-one thousand, six hundred twenty-three".