51357925 has 6 divisors (see below), whose sum is σ = 63683858. Its totient is φ = 41086320.

The previous prime is 51357899. The next prime is 51357937. The reversal of 51357925 is 52975315.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3996001 + 47361924 = 1999^2 + 6882^2 .

It is not a de Polignac number, because 51357925 - 2¹¹ = 51355877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1027134 + ... + 1027183.

Almost surely, 2^51357925 is an apocalyptic number.

It is an amenable number.

51357925 is a deficient number, since it is larger than the sum of its proper divisors (12325933).

51357925 is a wasteful number, since it uses less digits than its factorization.

51357925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054327 (or 2054322 counting only the distinct ones).

The product of its digits is 47250, while the sum is 37.

The square root of 51357925 is about 7166.4443763975. Note that the first 3 decimals coincide. The cubic root of 51357925 is about 371.7084975965.

The spelling of 51357925 in words is "fifty-one million, three hundred fifty-seven thousand, nine hundred twenty-five".