51857275 has 12 divisors (see below), whose sum is σ = 64813312. Its totient is φ = 41156640.

The previous prime is 51857261. The next prime is 51857287. The reversal of 51857275 is 57275815.

It is a de Polignac number, because none of the positive numbers 2^k-51857275 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4992 + ... + 11341.

Almost surely, 2^51857275 is an apocalyptic number.

51857275 is a deficient number, since it is larger than the sum of its proper divisors (12956037).

51857275 is a wasteful number, since it uses less digits than its factorization.

51857275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16470 (or 16465 counting only the distinct ones).

The product of its digits is 98000, while the sum is 40.

The square root of 51857275 is about 7201.1995528523. The cubic root of 51857275 is about 372.9093138936.

The spelling of 51857275 in words is "fifty-one million, eight hundred fifty-seven thousand, two hundred seventy-five".