52531404 has 24 divisors (see below), whose sum is σ = 123160128. Its totient is φ = 17426640.

The previous prime is 52531403. The next prime is 52531421. The reversal of 52531404 is 40413525.

It is a super-2 number, since 2×52531404² = 5519096812422432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52531403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7842 + ... + 12905.

It is an arithmetic number, because the mean of its divisors is an integer number (5131672).

Almost surely, 2^52531404 is an apocalyptic number.

It is an amenable number.

52531404 is an abundant number, since it is smaller than the sum of its proper divisors (70628724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52531404 is a wasteful number, since it uses less digits than its factorization.

52531404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20965 (or 20963 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 52531404 is about 7247.8551310026. The cubic root of 52531404 is about 374.5182649709.

Adding to 52531404 its reverse (40413525), we get a palindrome (92944929).

The spelling of 52531404 in words is "fifty-two million, five hundred thirty-one thousand, four hundred four".