52438431 has 4 divisors (see below), whose sum is σ = 69917912. Its totient is φ = 34958952.

The previous prime is 52438411. The next prime is 52438439. The reversal of 52438431 is 13483425.

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

It is not a de Polignac number, because 52438431 - 2¹¹ = 52436383 is a prime.

It is a super-2 number, since 2×52438431² = 5499578091483522, 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 (52438439) 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, 8739736 + ... + 8739741.

It is an arithmetic number, because the mean of its divisors is an integer number (17479478).

Almost surely, 2^52438431 is an apocalyptic number.

52438431 is a deficient number, since it is larger than the sum of its proper divisors (17479481).

52438431 is a wasteful number, since it uses less digits than its factorization.

52438431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17479480.

The product of its digits is 11520, while the sum is 30.

The square root of 52438431 is about 7241.4384620737. The cubic root of 52438431 is about 374.2971867434.

The spelling of 52438431 in words is "fifty-two million, four hundred thirty-eight thousand, four hundred thirty-one".