51272808 has 32 divisors (see below), whose sum is σ = 128652000. Its totient is φ = 17028288.

The previous prime is 51272807. The next prime is 51272831. The reversal of 51272808 is 80827215.

It is not an unprimeable number, because it can be changed into a prime (51272801) 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, 3018 + ... + 10566.

It is an arithmetic number, because the mean of its divisors is an integer number (4020375).

Almost surely, 2^51272808 is an apocalyptic number.

It is an amenable number.

51272808 is an abundant number, since it is smaller than the sum of its proper divisors (77379192).

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

51272808 is a wasteful number, since it uses less digits than its factorization.

51272808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7841 (or 7837 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 51272808 is about 7160.5033342636. The cubic root of 51272808 is about 371.5030362395.

The spelling of 51272808 in words is "fifty-one million, two hundred seventy-two thousand, eight hundred eight".