51163725 has 12 divisors (see below), whose sum is σ = 84590816. Its totient is φ = 27287280.

The previous prime is 51163703. The next prime is 51163741. The reversal of 51163725 is 52736115.

It is not a de Polignac number, because 51163725 - 2²⁴ = 34386509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51163692 and 51163701.

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, 341017 + ... + 341166.

Almost surely, 2^51163725 is an apocalyptic number.

It is an amenable number.

51163725 is a deficient number, since it is larger than the sum of its proper divisors (33427091).

51163725 is a wasteful number, since it uses less digits than its factorization.

51163725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682196 (or 682191 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 51163725 is about 7152.8822861837. The cubic root of 51163725 is about 371.2393913689.

The spelling of 51163725 in words is "fifty-one million, one hundred sixty-three thousand, seven hundred twenty-five".