51057218 has 16 divisors (see below), whose sum is σ = 82585440. Its totient is φ = 23594400.

The previous prime is 51057191. The next prime is 51057221. The reversal of 51057218 is 81275015.

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, 14828 + ... + 17943.

It is an arithmetic number, because the mean of its divisors is an integer number (5161590).

Almost surely, 2^51057218 is an apocalyptic number.

51057218 is a deficient number, since it is larger than the sum of its proper divisors (31528222).

51057218 is a wasteful number, since it uses less digits than its factorization.

51057218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32833.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 51057218 is about 7145.4333668435. The cubic root of 51057218 is about 370.9816106723.

The spelling of 51057218 in words is "fifty-one million, fifty-seven thousand, two hundred eighteen".