51957250 has 64 divisors (see below), whose sum is σ = 103076064. Its totient is φ = 19584000.

The previous prime is 51957233. The next prime is 51957277. The reversal of 51957250 is 5275915.

It can be written as a sum of positive squares in 16 ways, for example, as 2550409 + 49406841 = 1597^2 + 7029^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379182 + ... + 379318.

Almost surely, 2^51957250 is an apocalyptic number.

51957250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51957250 is a deficient number, since it is larger than the sum of its proper divisors (51118814).

51957250 is a wasteful number, since it uses less digits than its factorization.

51957250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 51957250 is about 7208.1377622795. The cubic root of 51957250 is about 373.1488024773.

The spelling of 51957250 in words is "fifty-one million, nine hundred fifty-seven thousand, two hundred fifty".