51894656 has 32 divisors (see below), whose sum is σ = 112785480. Its totient is φ = 23587840.

The previous prime is 51894631. The next prime is 51894707. The reversal of 51894656 is 65649815.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 17021 + ... + 19836.

Almost surely, 2^51894656 is an apocalyptic number.

It is an amenable number.

51894656 is an abundant number, since it is smaller than the sum of its proper divisors (60890824).

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

51894656 is a wasteful number, since it uses less digits than its factorization.

51894656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36882 (or 36870 counting only the distinct ones).

The product of its digits is 259200, while the sum is 44.

The square root of 51894656 is about 7203.7945556491. The cubic root of 51894656 is about 372.9988955062.

The spelling of 51894656 in words is "fifty-one million, eight hundred ninety-four thousand, six hundred fifty-six".