5172507391 has 2 divisors, whose sum is σ = 5172507392. Its totient is φ = 5172507390.

The previous prime is 5172507377. The next prime is 5172507413. The reversal of 5172507391 is 1937052715.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5172507391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5172507341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2586253695 + 2586253696.

It is an arithmetic number, because the mean of its divisors is an integer number (2586253696).

Almost surely, 2^5172507391 is an apocalyptic number.

5172507391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5172507391 is an equidigital number, since it uses as much as digits as its factorization.

5172507391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 5172507391 is about 71920.1459328330. The cubic root of 5172507391 is about 1729.4195866651.

The spelling of 5172507391 in words is "five billion, one hundred seventy-two million, five hundred seven thousand, three hundred ninety-one".