51512275 has 12 divisors (see below), whose sum is σ = 64777104. Its totient is φ = 40628000.

The previous prime is 51512267. The next prime is 51512281. The reversal of 51512275 is 57221515.

It is not a de Polignac number, because 51512275 - 2³ = 51512267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12736 + ... + 16285.

It is an arithmetic number, because the mean of its divisors is an integer number (5398092).

Almost surely, 2^51512275 is an apocalyptic number.

51512275 is a deficient number, since it is larger than the sum of its proper divisors (13264829).

51512275 is a wasteful number, since it uses less digits than its factorization.

51512275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29102 (or 29097 counting only the distinct ones).

The product of its digits is 3500, while the sum is 28.

The square root of 51512275 is about 7177.2052360233. The cubic root of 51512275 is about 372.0805000759.

The spelling of 51512275 in words is "fifty-one million, five hundred twelve thousand, two hundred seventy-five".