51516275 has 12 divisors (see below), whose sum is σ = 64002600. Its totient is φ = 41134080.

The previous prime is 51516271. The next prime is 51516281. The reversal of 51516275 is 57261515.

It is not a de Polignac number, because 51516275 - 2² = 51516271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51516271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13811 + ... + 17139.

It is an arithmetic number, because the mean of its divisors is an integer number (5333550).

Almost surely, 2^51516275 is an apocalyptic number.

51516275 is a deficient number, since it is larger than the sum of its proper divisors (12486325).

51516275 is a wasteful number, since it uses less digits than its factorization.

51516275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958 (or 3953 counting only the distinct ones).

The product of its digits is 10500, while the sum is 32.

The square root of 51516275 is about 7177.4838906124. The cubic root of 51516275 is about 372.0901306832.

The spelling of 51516275 in words is "fifty-one million, five hundred sixteen thousand, two hundred seventy-five".