51248904 has 48 divisors (see below), whose sum is σ = 149043600. Its totient is φ = 14642208.

The previous prime is 51248881. The next prime is 51248957. The reversal of 51248904 is 40984215.

It is a super-2 number, since 2×51248904² = 5252900322402432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20614 + ... + 22965.

It is an arithmetic number, because the mean of its divisors is an integer number (3105075).

Almost surely, 2^51248904 is an apocalyptic number.

It is an amenable number.

51248904 is an abundant number, since it is smaller than the sum of its proper divisors (97794696).

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

51248904 is a wasteful number, since it uses less digits than its factorization.

51248904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43602 (or 43591 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 51248904 is about 7158.8339832685. The cubic root of 51248904 is about 371.4452942034.

It can be divided in two parts, 5124 and 8904, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 51248904 in words is "fifty-one million, two hundred forty-eight thousand, nine hundred four".