52001631 has 24 divisors (see below), whose sum is σ = 82250064. Its totient is φ = 31397760.

The previous prime is 52001617. The next prime is 52001641. The reversal of 52001631 is 13610025.

It is not a de Polignac number, because 52001631 - 2⁷ = 52001503 is a prime.

It is a super-2 number, since 2×52001631² = 5408339253320322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52001641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30555 + ... + 32211.

It is an arithmetic number, because the mean of its divisors is an integer number (3427086).

Almost surely, 2^52001631 is an apocalyptic number.

52001631 is a deficient number, since it is larger than the sum of its proper divisors (30248433).

52001631 is a wasteful number, since it uses less digits than its factorization.

52001631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1988 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 52001631 is about 7211.2156395437. The cubic root of 52001631 is about 373.2550180292.

Adding to 52001631 its reverse (13610025), we get a palindrome (65611656).

The spelling of 52001631 in words is "fifty-two million, one thousand, six hundred thirty-one".