99958523 has 4 divisors (see below), whose sum is σ = 114238320. Its totient is φ = 85678728.

The previous prime is 99958501. The next prime is 99958553. The reversal of 99958523 is 32585999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32585999 = 79 ⋅412481.

It is a cyclic number.

It is not a de Polignac number, because 99958523 - 2⁸ = 99958267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99958553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7139888 + ... + 7139901.

It is an arithmetic number, because the mean of its divisors is an integer number (28559580).

Almost surely, 2^99958523 is an apocalyptic number.

99958523 is a deficient number, since it is larger than the sum of its proper divisors (14279797).

99958523 is a wasteful number, since it uses less digits than its factorization.

99958523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14279796.

The product of its digits is 874800, while the sum is 50.

The square root of 99958523 is about 9997.9259349127. The cubic root of 99958523 is about 464.0947014269.

The spelling of 99958523 in words is "ninety-nine million, nine hundred fifty-eight thousand, five hundred twenty-three".