51857056 has 24 divisors (see below), whose sum is σ = 103004244. Its totient is φ = 25697280.

The previous prime is 51857053. The next prime is 51857059. The reversal of 51857056 is 65075815.

It is an interprime number because it is at equal distance from previous prime (51857053) and next prime (51857059).

It can be written as a sum of positive squares in 2 ways, for example, as 32672656 + 19184400 = 5716^2 + 4380^2 .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (51857053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555 + ... + 10786.

Almost surely, 2^51857056 is an apocalyptic number.

It is an amenable number.

51857056 is a deficient number, since it is larger than the sum of its proper divisors (51147188).

51857056 is a wasteful number, since it uses less digits than its factorization.

51857056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14464 (or 14456 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 51857056 is about 7201.1843470363. The cubic root of 51857056 is about 372.9087889448.

The spelling of 51857056 in words is "fifty-one million, eight hundred fifty-seven thousand, fifty-six".