52638431 has 4 divisors (see below), whose sum is σ = 52652952. Its totient is φ = 52623912.

The previous prime is 52638419. The next prime is 52638437. The reversal of 52638431 is 13483625.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 52638431 - 2⁶ = 52638367 is a prime.

It is a super-2 number, since 2×52638431² = 5541608836283522, 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 (52638437) 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, 3236 + ... + 10758.

It is an arithmetic number, because the mean of its divisors is an integer number (13163238).

Almost surely, 2^52638431 is an apocalyptic number.

52638431 is a deficient number, since it is larger than the sum of its proper divisors (14521).

52638431 is an equidigital number, since it uses as much as digits as its factorization.

52638431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14520.

The product of its digits is 17280, while the sum is 32.

The square root of 52638431 is about 7255.2347308685. The cubic root of 52638431 is about 374.7724391226.

The spelling of 52638431 in words is "fifty-two million, six hundred thirty-eight thousand, four hundred thirty-one".