51817672 has 16 divisors (see below), whose sum is σ = 97234560. Its totient is φ = 25888464.

The previous prime is 51817627. The next prime is 51817681. The reversal of 51817672 is 27671815.

It is a super-2 number, since 2×51817672² = 5370142262999168, which contains 22 as substring.

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, 18253 + ... + 20899.

It is an arithmetic number, because the mean of its divisors is an integer number (6077160).

Almost surely, 2^51817672 is an apocalyptic number.

It is an amenable number.

51817672 is a deficient number, since it is larger than the sum of its proper divisors (45416888).

51817672 is a wasteful number, since it uses less digits than its factorization.

51817672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100 (or 5096 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 51817672 is about 7198.4492774486. The cubic root of 51817672 is about 372.8143603978.

The spelling of 51817672 in words is "fifty-one million, eight hundred seventeen thousand, six hundred seventy-two".