51279388 has 12 divisors (see below), whose sum is σ = 91078792. Its totient is φ = 25256880.

The previous prime is 51279379. The next prime is 51279391. The reversal of 51279388 is 88397215.

51279388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95403 + ... + 95938.

Almost surely, 2^51279388 is an apocalyptic number.

It is an amenable number.

51279388 is a deficient number, since it is larger than the sum of its proper divisors (39799404).

51279388 is a wasteful number, since it uses less digits than its factorization.

51279388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191412 (or 191410 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 51279388 is about 7160.9627844306. The cubic root of 51279388 is about 371.5189276090.

The spelling of 51279388 in words is "fifty-one million, two hundred seventy-nine thousand, three hundred eighty-eight".