52421631 has 8 divisors (see below), whose sum is σ = 71041584. Its totient is φ = 34374720.

The previous prime is 52421617. The next prime is 52421641. The reversal of 52421631 is 13612425.

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

It is not a de Polignac number, because 52421631 - 2¹¹ = 52419583 is a prime.

It is a super-2 number, since 2×52421631² = 5496054793400322, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52421641) 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, 143046 + ... + 143411.

It is an arithmetic number, because the mean of its divisors is an integer number (8880198).

Almost surely, 2^52421631 is an apocalyptic number.

52421631 is a deficient number, since it is larger than the sum of its proper divisors (18619953).

52421631 is a wasteful number, since it uses less digits than its factorization.

52421631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286521.

The product of its digits is 1440, while the sum is 24.

The square root of 52421631 is about 7240.2783786261. The cubic root of 52421631 is about 374.2572105639.

It can be divided in two parts, 524 and 21631, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 52421631 in words is "fifty-two million, four hundred twenty-one thousand, six hundred thirty-one".