51976868 has 24 divisors (see below), whose sum is σ = 92815800. Its totient is φ = 25463808.

The previous prime is 51976867. The next prime is 51976879. The reversal of 51976868 is 86867915.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26956864 + 25020004 = 5192^2 + 5002^2 .

It is not an unprimeable number, because it can be changed into a prime (51976867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41678 + ... + 42906.

It is an arithmetic number, because the mean of its divisors is an integer number (3867325).

Almost surely, 2^51976868 is an apocalyptic number.

It is an amenable number.

51976868 is a deficient number, since it is larger than the sum of its proper divisors (40838932).

51976868 is a wasteful number, since it uses less digits than its factorization.

51976868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439 (or 1437 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 51976868 is about 7209.4984568970. The cubic root of 51976868 is about 373.1957610317.

The spelling of 51976868 in words is "fifty-one million, nine hundred seventy-six thousand, eight hundred sixty-eight".