51979372 has 12 divisors (see below), whose sum is σ = 91276416. Its totient is φ = 25900400.

The previous prime is 51979357. The next prime is 51979373. The reversal of 51979372 is 27397915.

It is a super-2 number, since 2×51979372² = 5403710227028768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51979373) 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 3 ways as a sum of consecutive naturals, for example, 21004 + ... + 23347.

It is an arithmetic number, because the mean of its divisors is an integer number (7606368).

Almost surely, 2^51979372 is an apocalyptic number.

It is an amenable number.

51979372 is a deficient number, since it is larger than the sum of its proper divisors (39297044).

51979372 is a wasteful number, since it uses less digits than its factorization.

51979372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44648 (or 44646 counting only the distinct ones).

The product of its digits is 119070, while the sum is 43.

The square root of 51979372 is about 7209.6721145972. The cubic root of 51979372 is about 373.2017538719.

The spelling of 51979372 in words is "fifty-one million, nine hundred seventy-nine thousand, three hundred seventy-two".