5163857921 has 2 divisors, whose sum is σ = 5163857922. Its totient is φ = 5163857920.

The previous prime is 5163857861. The next prime is 5163857939. The reversal of 5163857921 is 1297583615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4527809521 + 636048400 = 67289^2 + 25220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5163857921 is a prime.

It is not a weakly prime, because it can be changed into another prime (5163857521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2581928960 + 2581928961.

It is an arithmetic number, because the mean of its divisors is an integer number (2581928961).

Almost surely, 2^5163857921 is an apocalyptic number.

It is an amenable number.

5163857921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5163857921 is an equidigital number, since it uses as much as digits as its factorization.

5163857921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 47.

The square root of 5163857921 is about 71859.9883175610. The cubic root of 5163857921 is about 1728.4550700158.

The spelling of 5163857921 in words is "five billion, one hundred sixty-three million, eight hundred fifty-seven thousand, nine hundred twenty-one".