5172520423 has 16 divisors (see below), whose sum is σ = 6292512000. Its totient is φ = 4153038912.

The previous prime is 5172520363. The next prime is 5172520477. The reversal of 5172520423 is 3240252715.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5172520423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5172523423) 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, 206653 + ... + 230326.

It is an arithmetic number, because the mean of its divisors is an integer number (393282000).

Almost surely, 2^5172520423 is an apocalyptic number.

5172520423 is a deficient number, since it is larger than the sum of its proper divisors (1119991577).

5172520423 is a wasteful number, since it uses less digits than its factorization.

5172520423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437094.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 5172520423 is about 71920.2365332595. The cubic root of 5172520423 is about 1729.4210390734.

The spelling of 5172520423 in words is "five billion, one hundred seventy-two million, five hundred twenty thousand, four hundred twenty-three".