99475521 has 8 divisors (see below), whose sum is σ = 132717984. Its totient is φ = 66275040.

The previous prime is 99475513. The next prime is 99475543. The reversal of 99475521 is 12557499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99475521 - 2³ = 99475513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99475561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4471 + ... + 14796.

It is an arithmetic number, because the mean of its divisors is an integer number (16589748).

Almost surely, 2^99475521 is an apocalyptic number.

It is an amenable number.

99475521 is a deficient number, since it is larger than the sum of its proper divisors (33242463).

99475521 is a wasteful number, since it uses less digits than its factorization.

99475521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20991.

The product of its digits is 113400, while the sum is 42.

The square root of 99475521 is about 9973.7415747552. The cubic root of 99475521 is about 463.3459885898.

The spelling of 99475521 in words is "ninety-nine million, four hundred seventy-five thousand, five hundred twenty-one".