51836872 has 8 divisors (see below), whose sum is σ = 97194150. Its totient is φ = 25918432.

The previous prime is 51836857. The next prime is 51836923. The reversal of 51836872 is 27863815.

It can be written as a sum of positive squares in only one way, i.e., 39262756 + 12574116 = 6266^2 + 3546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51836872² = 5374122597488768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239797 + ... + 3239812.

Almost surely, 2^51836872 is an apocalyptic number.

It is an amenable number.

51836872 is a deficient number, since it is larger than the sum of its proper divisors (45357278).

51836872 is a wasteful number, since it uses less digits than its factorization.

51836872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479615 (or 6479611 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 51836872 is about 7199.7827745009. The cubic root of 51836872 is about 372.8604010086.

The spelling of 51836872 in words is "fifty-one million, eight hundred thirty-six thousand, eight hundred seventy-two".