5172139933 has 2 divisors, whose sum is σ = 5172139934. Its totient is φ = 5172139932.

The previous prime is 5172139909. The next prime is 5172139943. The reversal of 5172139933 is 3399312715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2894655204 + 2277484729 = 53802^2 + 47723^2 .

It is a cyclic number.

It is not a de Polignac number, because 5172139933 - 2²⁹ = 4635269021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5172139933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5172139943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2586069966 + 2586069967.

It is an arithmetic number, because the mean of its divisors is an integer number (2586069967).

Almost surely, 2^5172139933 is an apocalyptic number.

It is an amenable number.

5172139933 is a deficient number, since it is larger than the sum of its proper divisors (1).

5172139933 is an equidigital number, since it uses as much as digits as its factorization.

5172139933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 43.

The square root of 5172139933 is about 71917.5912624999. The cubic root of 5172139933 is about 1729.3786326968.

The spelling of 5172139933 in words is "five billion, one hundred seventy-two million, one hundred thirty-nine thousand, nine hundred thirty-three".