99520575 has 96 divisors (see below), whose sum is σ = 216176640. Its totient is φ = 39139200.

The previous prime is 99520559. The next prime is 99520579. The reversal of 99520575 is 57502599.

It is a Cunningham number, because it is equal to 9976²-1.

It is not a de Polignac number, because 99520575 - 2⁴ = 99520559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99520579) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 109272 + ... + 110178.

It is an arithmetic number, because the mean of its divisors is an integer number (2251840).

Almost surely, 2^99520575 is an apocalyptic number.

99520575 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99520575 is an abundant number, since it is smaller than the sum of its proper divisors (116656065).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99520575 is a wasteful number, since it uses less digits than its factorization.

99520575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 141750, while the sum is 42.

The square root of 99520575 is about 9975.9999498797. Note that the first 4 decimals coincide. The cubic root of 99520575 is about 463.4159302167.

The spelling of 99520575 in words is "ninety-nine million, five hundred twenty thousand, five hundred seventy-five".