51310252 has 18 divisors (see below), whose sum is σ = 104453412. Its totient is φ = 21990024.

The previous prime is 51310219. The next prime is 51310261. The reversal of 51310252 is 25201315.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130698 + ... + 131089.

Almost surely, 2^51310252 is an apocalyptic number.

It is an amenable number.

51310252 is an abundant number, since it is smaller than the sum of its proper divisors (53143160).

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

51310252 is a wasteful number, since it uses less digits than its factorization.

51310252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261805 (or 261796 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51310252 is about 7163.1174777467. The cubic root of 51310252 is about 371.5934491722.

Adding to 51310252 its reverse (25201315), we get a palindrome (76511567).

The spelling of 51310252 in words is "fifty-one million, three hundred ten thousand, two hundred fifty-two".