51993364 has 12 divisors (see below), whose sum is σ = 93104704. Its totient is φ = 25392024.

The previous prime is 51993353. The next prime is 51993391. The reversal of 51993364 is 46339915.

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, 150972 + ... + 151315.

Almost surely, 2^51993364 is an apocalyptic number.

It is an amenable number.

51993364 is a deficient number, since it is larger than the sum of its proper divisors (41111340).

51993364 is a wasteful number, since it uses less digits than its factorization.

51993364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302334 (or 302332 counting only the distinct ones).

The product of its digits is 87480, while the sum is 40.

The square root of 51993364 is about 7210.6424124346. The cubic root of 51993364 is about 373.2352374780.

The spelling of 51993364 in words is "fifty-one million, nine hundred ninety-three thousand, three hundred sixty-four".