5615106521 has 2 divisors, whose sum is σ = 5615106522. Its totient is φ = 5615106520.

The previous prime is 5615106487. The next prime is 5615106533. The reversal of 5615106521 is 1256015165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5394168025 + 220938496 = 73445^2 + 14864^2 .

It is a cyclic number.

It is not a de Polignac number, because 5615106521 - 2¹⁴ = 5615090137 is a prime.

It is not a weakly prime, because it can be changed into another prime (5615106821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2807553260 + 2807553261.

It is an arithmetic number, because the mean of its divisors is an integer number (2807553261).

Almost surely, 2^5615106521 is an apocalyptic number.

It is an amenable number.

5615106521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5615106521 is an equidigital number, since it uses as much as digits as its factorization.

5615106521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 5615106521 is about 74934.0144460445. The cubic root of 5615106521 is about 1777.4033722265.

The spelling of 5615106521 in words is "five billion, six hundred fifteen million, one hundred six thousand, five hundred twenty-one".