51632031 has 12 divisors (see below), whose sum is σ = 75670616. Its totient is φ = 31291920.

The previous prime is 51631961. The next prime is 51632039. The reversal of 51632031 is 13023615.

It is not a de Polignac number, because 51632031 - 2¹⁰ = 51631007 is a prime.

It is a super-2 number, since 2×51632031² = 5331733250369922, 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 = 51631989 and 51632007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51632039) 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 11 ways as a sum of consecutive naturals, for example, 70756 + ... + 71481.

Almost surely, 2^51632031 is an apocalyptic number.

51632031 is a deficient number, since it is larger than the sum of its proper divisors (24038585).

51632031 is a wasteful number, since it uses less digits than its factorization.

51632031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142262 (or 142251 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 51632031 is about 7185.5431944982. The cubic root of 51632031 is about 372.3686151363.

Adding to 51632031 its reverse (13023615), we get a palindrome (64655646).

The spelling of 51632031 in words is "fifty-one million, six hundred thirty-two thousand, thirty-one".