51051975 has 24 divisors (see below), whose sum is σ = 90900432. Its totient is φ = 25132800.

The previous prime is 51051953. The next prime is 51051983. The reversal of 51051975 is 57915015.

It is not a de Polignac number, because 51051975 - 2²⁰ = 50003399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25206 + ... + 27155.

It is an arithmetic number, because the mean of its divisors is an integer number (3787518).

Almost surely, 2^51051975 is an apocalyptic number.

51051975 is a deficient number, since it is larger than the sum of its proper divisors (39848457).

51051975 is a wasteful number, since it uses less digits than its factorization.

51051975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52387 (or 52382 counting only the distinct ones).

The product of its (nonzero) digits is 7875, while the sum is 33.

The square root of 51051975 is about 7145.0664797467. The cubic root of 51051975 is about 370.9689116962.

The spelling of 51051975 in words is "fifty-one million, fifty-one thousand, nine hundred seventy-five".