99960257 has 2 divisors, whose sum is σ = 99960258. Its totient is φ = 99960256.

The previous prime is 99960253. The next prime is 99960271. The reversal of 99960257 is 75206999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95863681 + 4096576 = 9791^2 + 2024^2 .

It is a cyclic number.

It is not a de Polignac number, because 99960257 - 2² = 99960253 is a prime.

It is not a weakly prime, because it can be changed into another prime (99960253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49980128 + 49980129.

It is an arithmetic number, because the mean of its divisors is an integer number (49980129).

Almost surely, 2^99960257 is an apocalyptic number.

It is an amenable number.

99960257 is a deficient number, since it is larger than the sum of its proper divisors (1).

99960257 is an equidigital number, since it uses as much as digits as its factorization.

99960257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 99960257 is about 9998.0126525225. The cubic root of 99960257 is about 464.0973849918.

The spelling of 99960257 in words is "ninety-nine million, nine hundred sixty thousand, two hundred fifty-seven".