99957158 has 12 divisors (see below), whose sum is σ = 174415212. Its totient is φ = 42838740.

The previous prime is 99957073. The next prime is 99957173. The reversal of 99957158 is 85175999.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 509888 + ... + 510083.

It is an arithmetic number, because the mean of its divisors is an integer number (14534601).

Almost surely, 2^99957158 is an apocalyptic number.

99957158 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

99957158 is a deficient number, since it is larger than the sum of its proper divisors (74458054).

99957158 is a wasteful number, since it uses less digits than its factorization.

99957158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019987 (or 1019980 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 53.

The square root of 99957158 is about 9997.8576705212. The cubic root of 99957158 is about 464.0925889102.

The spelling of 99957158 in words is "ninety-nine million, nine hundred fifty-seven thousand, one hundred fifty-eight".