51331252 has 12 divisors (see below), whose sum is σ = 102662560. Its totient is φ = 21999096.

The previous prime is 51331249. The next prime is 51331253. The reversal of 51331252 is 25213315.

51331252 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51331253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916602 + ... + 916657.

Almost surely, 2^51331252 is an apocalyptic number.

It is an amenable number.

51331252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51331252 is a wasteful number, since it uses less digits than its factorization.

51331252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833270 (or 1833268 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 51331252 is about 7164.5831700107. The cubic root of 51331252 is about 371.6441368859.

Adding to 51331252 its reverse (25213315), we get a palindrome (76544567).

The spelling of 51331252 in words is "fifty-one million, three hundred thirty-one thousand, two hundred fifty-two".