5021421569 has 2 divisors, whose sum is σ = 5021421570. Its totient is φ = 5021421568.

The previous prime is 5021421541. The next prime is 5021421611. The reversal of 5021421569 is 9651241205.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3241594225 + 1779827344 = 56935^2 + 42188^2 .

It is a cyclic number.

It is not a de Polignac number, because 5021421569 - 2⁸ = 5021421313 is a prime.

It is a super-2 number, since 2×5021421569² = 50429349147236843522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5021421539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510710784 + 2510710785.

It is an arithmetic number, because the mean of its divisors is an integer number (2510710785).

Almost surely, 2^5021421569 is an apocalyptic number.

It is an amenable number.

5021421569 is a deficient number, since it is larger than the sum of its proper divisors (1).

5021421569 is an equidigital number, since it uses as much as digits as its factorization.

5021421569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 5021421569 is about 70861.9895924465. The cubic root of 5021421569 is about 1712.4144920027.

The spelling of 5021421569 in words is "five billion, twenty-one million, four hundred twenty-one thousand, five hundred sixty-nine".