5251872171 has 16 divisors (see below), whose sum is σ = 8618457344. Its totient is φ = 2770218144.

The previous prime is 5251872151. The next prime is 5251872173. The reversal of 5251872171 is 1712781525.

It is not a de Polignac number, because 5251872171 - 2⁵ = 5251872139 is a prime.

It is a super-2 number, since 2×5251872171² = 55164322601048506482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (5251872173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9618541 + ... + 9619086.

It is an arithmetic number, because the mean of its divisors is an integer number (538653584).

Almost surely, 2^5251872171 is an apocalyptic number.

5251872171 is a deficient number, since it is larger than the sum of its proper divisors (3366585173).

5251872171 is a wasteful number, since it uses less digits than its factorization.

5251872171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19237650.

The product of its digits is 39200, while the sum is 39.

The square root of 5251872171 is about 72469.8017866753. The cubic root of 5251872171 is about 1738.2198920583.

The spelling of 5251872171 in words is "five billion, two hundred fifty-one million, eight hundred seventy-two thousand, one hundred seventy-one".