51364464 has 20 divisors (see below), whose sum is σ = 132691656. Its totient is φ = 17121472.

The previous prime is 51364447. The next prime is 51364493. The reversal of 51364464 is 46446315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534999 + ... + 535094.

Almost surely, 2^51364464 is an apocalyptic number.

It is an amenable number.

51364464 is an abundant number, since it is smaller than the sum of its proper divisors (81327192).

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

51364464 is a wasteful number, since it uses less digits than its factorization.

51364464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070104 (or 1070098 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 51364464 is about 7166.9005853298. The cubic root of 51364464 is about 371.7242724986.

The spelling of 51364464 in words is "fifty-one million, three hundred sixty-four thousand, four hundred sixty-four".