5172157065 has 32 divisors (see below), whose sum is σ = 8516192256. Its totient is φ = 2679135680.

The previous prime is 5172157063. The next prime is 5172157103. The reversal of 5172157065 is 5607512715.

It is not a de Polignac number, because 5172157065 - 2¹ = 5172157063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5172157063) 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, 64354 + ... + 120356.

It is an arithmetic number, because the mean of its divisors is an integer number (266131008).

Almost surely, 2^5172157065 is an apocalyptic number.

It is an amenable number.

5172157065 is a deficient number, since it is larger than the sum of its proper divisors (3344035191).

5172157065 is a wasteful number, since it uses less digits than its factorization.

5172157065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56189.

The product of its (nonzero) digits is 73500, while the sum is 39.

The square root of 5172157065 is about 71917.7103709510. The cubic root of 5172157065 is about 1729.3805421374.

The spelling of 5172157065 in words is "five billion, one hundred seventy-two million, one hundred fifty-seven thousand, sixty-five".