5155571917 has 2 divisors, whose sum is σ = 5155571918. Its totient is φ = 5155571916.

The previous prime is 5155571899. The next prime is 5155571933. The reversal of 5155571917 is 7191755515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4697868681 + 457703236 = 68541^2 + 21394^2 .

It is a cyclic number.

It is not a de Polignac number, because 5155571917 - 2²³ = 5147183309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5155571957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577785958 + 2577785959.

It is an arithmetic number, because the mean of its divisors is an integer number (2577785959).

Almost surely, 2^5155571917 is an apocalyptic number.

It is an amenable number.

5155571917 is a deficient number, since it is larger than the sum of its proper divisors (1).

5155571917 is an equidigital number, since it uses as much as digits as its factorization.

5155571917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275625, while the sum is 46.

The square root of 5155571917 is about 71802.3113625181. The cubic root of 5155571917 is about 1727.5300734270.

The spelling of 5155571917 in words is "five billion, one hundred fifty-five million, five hundred seventy-one thousand, nine hundred seventeen".