99257513 has 2 divisors, whose sum is σ = 99257514. Its totient is φ = 99257512.

The previous prime is 99257507. The next prime is 99257527. The reversal of 99257513 is 31575299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90478144 + 8779369 = 9512^2 + 2963^2 .

It is a cyclic number.

It is not a de Polignac number, because 99257513 - 2²⁰ = 98208937 is a prime.

It is not a weakly prime, because it can be changed into another prime (99257563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49628756 + 49628757.

It is an arithmetic number, because the mean of its divisors is an integer number (49628757).

Almost surely, 2^99257513 is an apocalyptic number.

It is an amenable number.

99257513 is a deficient number, since it is larger than the sum of its proper divisors (1).

99257513 is an equidigital number, since it uses as much as digits as its factorization.

99257513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 41.

The square root of 99257513 is about 9962.8064821114. The cubic root of 99257513 is about 463.0072552886.

The spelling of 99257513 in words is "ninety-nine million, two hundred fifty-seven thousand, five hundred thirteen".