99542558 has 32 divisors (see below), whose sum is σ = 165456000. Its totient is φ = 44724960.

The previous prime is 99542557. The next prime is 99542563. The reversal of 99542558 is 85524599.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99542557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64253 + ... + 65783.

It is an arithmetic number, because the mean of its divisors is an integer number (5170500).

Almost surely, 2^99542558 is an apocalyptic number.

99542558 is a deficient number, since it is larger than the sum of its proper divisors (65913442).

99542558 is a wasteful number, since it uses less digits than its factorization.

99542558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its digits is 648000, while the sum is 47.

The square root of 99542558 is about 9977.1016833547. The cubic root of 99542558 is about 463.4500488647.

The spelling of 99542558 in words is "ninety-nine million, five hundred forty-two thousand, five hundred fifty-eight".