51145315 has 12 divisors (see below), whose sum is σ = 66459744. Its totient is φ = 37768224.

The previous prime is 51145309. The next prime is 51145343. The reversal of 51145315 is 51354115.

It is a happy number.

It is not a de Polignac number, because 51145315 - 2⁹ = 51144803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51145315.

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, 29419 + ... + 31108.

It is an arithmetic number, because the mean of its divisors is an integer number (5538312).

Almost surely, 2^51145315 is an apocalyptic number.

51145315 is a deficient number, since it is larger than the sum of its proper divisors (15314429).

51145315 is a wasteful number, since it uses less digits than its factorization.

51145315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60558 (or 60545 counting only the distinct ones).

The product of its digits is 1500, while the sum is 25.

The square root of 51145315 is about 7151.5952765799. The cubic root of 51145315 is about 371.1948589252.

The spelling of 51145315 in words is "fifty-one million, one hundred forty-five thousand, three hundred fifteen".