51249464 has 32 divisors (see below), whose sum is σ = 112379520. Its totient is φ = 21452256.

The previous prime is 51249391. The next prime is 51249503. The reversal of 51249464 is 46494215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8234 + ... + 13049.

It is an arithmetic number, because the mean of its divisors is an integer number (3511860).

Almost surely, 2^51249464 is an apocalyptic number.

It is an amenable number.

51249464 is an abundant number, since it is smaller than the sum of its proper divisors (61130056).

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

51249464 is a wasteful number, since it uses less digits than its factorization.

51249464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21339 (or 21335 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 51249464 is about 7158.8730956764. The cubic root of 51249464 is about 371.4466471338.

The spelling of 51249464 in words is "fifty-one million, two hundred forty-nine thousand, four hundred sixty-four".