521460240113 has 2 divisors, whose sum is σ = 521460240114. Its totient is φ = 521460240112.

The previous prime is 521460240083. The next prime is 521460240157. The reversal of 521460240113 is 311042064125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 487696912609 + 33763327504 = 698353^2 + 183748^2 .

It is a cyclic number.

It is not a de Polignac number, because 521460240113 - 2²⁰ = 521459191537 is a prime.

It is a super-2 number, since 2×521460240113² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (521460240173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260730120056 + 260730120057.

It is an arithmetic number, because the mean of its divisors is an integer number (260730120057).

Almost surely, 2^521460240113 is an apocalyptic number.

It is an amenable number.

521460240113 is a deficient number, since it is larger than the sum of its proper divisors (1).

521460240113 is an equidigital number, since it uses as much as digits as its factorization.

521460240113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 521460240113 in words is "five hundred twenty-one billion, four hundred sixty million, two hundred forty thousand, one hundred thirteen".