52009631 has 6 divisors (see below), whose sum is σ = 54891432. Its totient is φ = 49271940.

The previous prime is 52009627. The next prime is 52009651. The reversal of 52009631 is 13690025.

It is not a de Polignac number, because 52009631 - 2² = 52009627 is a prime.

It is a super-2 number, since 2×52009631² = 5410003433512322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52009631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52009651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71675 + ... + 72396.

It is an arithmetic number, because the mean of its divisors is an integer number (9148572).

Almost surely, 2^52009631 is an apocalyptic number.

52009631 is a deficient number, since it is larger than the sum of its proper divisors (2881801).

52009631 is a wasteful number, since it uses less digits than its factorization.

52009631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144109 (or 144090 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 52009631 is about 7211.7703097090. The cubic root of 52009631 is about 373.2741577304.

Adding to 52009631 its reverse (13690025), we get a palindrome (65699656).

The spelling of 52009631 in words is "fifty-two million, nine thousand, six hundred thirty-one".