51158313 has 6 divisors (see below), whose sum is σ = 73895354. Its totient is φ = 34105536.

The previous prime is 51158281. The next prime is 51158329. The reversal of 51158313 is 31385115.

It can be written as a sum of positive squares in only one way, i.e., 34609689 + 16548624 = 5883^2 + 4068^2 .

It is not a de Polignac number, because 51158313 - 2⁵ = 51158281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51158333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2842120 + ... + 2842137.

Almost surely, 2^51158313 is an apocalyptic number.

It is an amenable number.

51158313 is a deficient number, since it is larger than the sum of its proper divisors (22737041).

51158313 is a wasteful number, since it uses less digits than its factorization.

51158313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684263 (or 5684260 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 51158313 is about 7152.5039671433. The cubic root of 51158313 is about 371.2263012454.

The spelling of 51158313 in words is "fifty-one million, one hundred fifty-eight thousand, three hundred thirteen".