5102221561 has 2 divisors, whose sum is σ = 5102221562. Its totient is φ = 5102221560.

The previous prime is 5102221513. The next prime is 5102221573. The reversal of 5102221561 is 1651222015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4305853161 + 796368400 = 65619^2 + 28220^2 .

It is a cyclic number.

It is not a de Polignac number, because 5102221561 - 2²⁵ = 5068667129 is a prime.

It is not a weakly prime, because it can be changed into another prime (5102221661) 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, 2551110780 + 2551110781.

It is an arithmetic number, because the mean of its divisors is an integer number (2551110781).

Almost surely, 2^5102221561 is an apocalyptic number.

It is an amenable number.

5102221561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5102221561 is an equidigital number, since it uses as much as digits as its factorization.

5102221561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 5102221561 is about 71429.8366300806. The cubic root of 5102221561 is about 1721.5505174074.

Adding to 5102221561 its reverse (1651222015), we get a palindrome (6753443576).

The spelling of 5102221561 in words is "five billion, one hundred two million, two hundred twenty-one thousand, five hundred sixty-one".