51057725 has 12 divisors (see below), whose sum is σ = 63906624. Its totient is φ = 40462320.

The previous prime is 51057707. The next prime is 51057737. The reversal of 51057725 is 52775015.

It is not a de Polignac number, because 51057725 - 2¹⁰ = 51056701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51057691 and 51057700.

It is a congruent 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, 6869 + ... + 12218.

It is an arithmetic number, because the mean of its divisors is an integer number (5325552).

Almost surely, 2^51057725 is an apocalyptic number.

It is an amenable number.

51057725 is a deficient number, since it is larger than the sum of its proper divisors (12848899).

51057725 is a wasteful number, since it uses less digits than its factorization.

51057725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19204 (or 19199 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 51057725 is about 7145.4688439598. The cubic root of 51057725 is about 370.9828386218.

The spelling of 51057725 in words is "fifty-one million, fifty-seven thousand, seven hundred twenty-five".