52664431 has 8 divisors (see below), whose sum is σ = 54183440. Its totient is φ = 51150528.

The previous prime is 52664401. The next prime is 52664461. The reversal of 52664431 is 13446625.

52664431 = 1175² + 1176² + ... + 1211².

It is an interprime number because it is at equal distance from previous prime (52664401) and next prime (52664461).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52664431 - 2⁵ = 52664399 is a prime.

It is a super-2 number, since 2×52664431² = 5547084585107522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52664393 and 52664402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52664401) 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, 30955 + ... + 32611.

It is an arithmetic number, because the mean of its divisors is an integer number (6772930).

Almost surely, 2^52664431 is an apocalyptic number.

52664431 is a deficient number, since it is larger than the sum of its proper divisors (1519009).

52664431 is a wasteful number, since it uses less digits than its factorization.

52664431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553.

The product of its digits is 17280, while the sum is 31.

The square root of 52664431 is about 7257.0263193680. The cubic root of 52664431 is about 374.8341334611.

The spelling of 52664431 in words is "fifty-two million, six hundred sixty-four thousand, four hundred thirty-one".