51057164 has 12 divisors (see below), whose sum is σ = 90354600. Its totient is φ = 25241568.

The previous prime is 51057163. The next prime is 51057173. The reversal of 51057164 is 46175015.

It is not an unprimeable number, because it can be changed into a prime (51057163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71354 + ... + 72065.

It is an arithmetic number, because the mean of its divisors is an integer number (7529550).

Almost surely, 2^51057164 is an apocalyptic number.

It is an amenable number.

51057164 is a deficient number, since it is larger than the sum of its proper divisors (39297436).

51057164 is a wasteful number, since it uses less digits than its factorization.

51057164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143512 (or 143510 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 51057164 is about 7145.4295882053. The cubic root of 51057164 is about 370.9814798843.

The spelling of 51057164 in words is "fifty-one million, fifty-seven thousand, one hundred sixty-four".