51979272 has 32 divisors (see below), whose sum is σ = 130210080. Its totient is φ = 17291520.

The previous prime is 51979243. The next prime is 51979283. The reversal of 51979272 is 27297915.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11808 + ... + 15600.

It is an arithmetic number, because the mean of its divisors is an integer number (4069065).

Almost surely, 2^51979272 is an apocalyptic number.

It is an amenable number.

51979272 is an abundant number, since it is smaller than the sum of its proper divisors (78230808).

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

51979272 is a wasteful number, since it uses less digits than its factorization.

51979272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373 (or 4369 counting only the distinct ones).

The product of its digits is 79380, while the sum is 42.

The square root of 51979272 is about 7209.6651794657. The cubic root of 51979272 is about 373.2015145449.

The spelling of 51979272 in words is "fifty-one million, nine hundred seventy-nine thousand, two hundred seventy-two".