5055515021 has 2 divisors, whose sum is σ = 5055515022. Its totient is φ = 5055515020.

The previous prime is 5055515009. The next prime is 5055515039. The reversal of 5055515021 is 1205155505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2919781225 + 2135733796 = 54035^2 + 46214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5055515021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5055515821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2527757510 + 2527757511.

It is an arithmetic number, because the mean of its divisors is an integer number (2527757511).

Almost surely, 2^5055515021 is an apocalyptic number.

It is an amenable number.

5055515021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5055515021 is an equidigital number, since it uses as much as digits as its factorization.

5055515021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6250, while the sum is 29.

The square root of 5055515021 is about 71102.1449817092. The cubic root of 5055515021 is about 1716.2812912208.

The spelling of 5055515021 in words is "five billion, fifty-five million, five hundred fifteen thousand, twenty-one".