51315355 has 32 divisors (see below), whose sum is σ = 78422400. Its totient is φ = 31352832.

The previous prime is 51315317. The next prime is 51315359. The reversal of 51315355 is 55351315.

It is not a de Polignac number, because 51315355 - 2⁷ = 51315227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51315359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11251 + ... + 15139.

It is an arithmetic number, because the mean of its divisors is an integer number (2450700).

Almost surely, 2^51315355 is an apocalyptic number.

51315355 is a deficient number, since it is larger than the sum of its proper divisors (27107045).

51315355 is a wasteful number, since it uses less digits than its factorization.

51315355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943.

The product of its digits is 5625, while the sum is 28.

The square root of 51315355 is about 7163.4736685494. The cubic root of 51315355 is about 371.6057675584.

The spelling of 51315355 in words is "fifty-one million, three hundred fifteen thousand, three hundred fifty-five".