51172368 has 40 divisors (see below), whose sum is σ = 142365888. Its totient is φ = 15745152.

The previous prime is 51172367. The next prime is 51172379. The reversal of 51172368 is 86327115.

It is a super-2 number, since 2×51172368² = 5237222493454848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51172361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40380 + ... + 41627.

Almost surely, 2^51172368 is an apocalyptic number.

It is an amenable number.

51172368 is an abundant number, since it is smaller than the sum of its proper divisors (91193520).

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

51172368 is a wasteful number, since it uses less digits than its factorization.

51172368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82031 (or 82025 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 51172368 is about 7153.4864227172. The cubic root of 51172368 is about 371.2602944690.

The spelling of 51172368 in words is "fifty-one million, one hundred seventy-two thousand, three hundred sixty-eight".