99000557 has 2 divisors, whose sum is σ = 99000558. Its totient is φ = 99000556.

The previous prime is 99000547. The next prime is 99000563. The reversal of 99000557 is 75500099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98982601 + 17956 = 9949^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 99000557 - 2¹² = 98996461 is a prime.

It is a super-2 number, since 2×99000557² = 19602220572620498, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99000547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49500278 + 49500279.

It is an arithmetic number, because the mean of its divisors is an integer number (49500279).

Almost surely, 2^99000557 is an apocalyptic number.

It is an amenable number.

99000557 is a deficient number, since it is larger than the sum of its proper divisors (1).

99000557 is an equidigital number, since it uses as much as digits as its factorization.

99000557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14175, while the sum is 35.

The square root of 99000557 is about 9949.9023613300. The cubic root of 99000557 is about 462.6073684985.

The spelling of 99000557 in words is "ninety-nine million, five hundred fifty-seven", and thus it is an aban number.