5135117521 has 2 divisors, whose sum is σ = 5135117522. Its totient is φ = 5135117520.

The previous prime is 5135117513. The next prime is 5135117527. The reversal of 5135117521 is 1257115315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3731865921 + 1403251600 = 61089^2 + 37460^2 .

It is a cyclic number.

It is not a de Polignac number, because 5135117521 - 2³ = 5135117513 is a prime.

It is not a weakly prime, because it can be changed into another prime (5135117527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2567558760 + 2567558761.

It is an arithmetic number, because the mean of its divisors is an integer number (2567558761).

Almost surely, 2^5135117521 is an apocalyptic number.

It is an amenable number.

5135117521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5135117521 is an equidigital number, since it uses as much as digits as its factorization.

5135117521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5250, while the sum is 31.

The square root of 5135117521 is about 71659.7343073500. The cubic root of 5135117521 is about 1725.2424243482.

The spelling of 5135117521 in words is "five billion, one hundred thirty-five million, one hundred seventeen thousand, five hundred twenty-one".