51757425 has 36 divisors (see below), whose sum is σ = 97590480. Its totient is φ = 26148960.

The previous prime is 51757421. The next prime is 51757427. The reversal of 51757425 is 52475715.

51757425 = 25² + 26² + ... + 537².

It is not a de Polignac number, because 51757425 - 2² = 51757421 is a prime.

51757425 is a modest number, since divided by 7425 gives 5175 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 51757425.

It is not an unprimeable number, because it can be changed into a prime (51757421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1779 + ... + 10328.

Almost surely, 2^51757425 is an apocalyptic number.

It is an amenable number.

51757425 is a deficient number, since it is larger than the sum of its proper divisors (45833055).

51757425 is a wasteful number, since it uses less digits than its factorization.

51757425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12142 (or 12134 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 51757425 is about 7194.2633396339. The cubic root of 51757425 is about 372.6698173205.

The spelling of 51757425 in words is "fifty-one million, seven hundred fifty-seven thousand, four hundred twenty-five".