99987522 has 8 divisors (see below), whose sum is σ = 199975056. Its totient is φ = 33329172.

The previous prime is 99987497. The next prime is 99987529. The reversal of 99987522 is 22578999.

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

99987522 is an admirable number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99987529) 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 3 ways as a sum of consecutive naturals, for example, 8332288 + ... + 8332299.

It is an arithmetic number, because the mean of its divisors is an integer number (24996882).

Almost surely, 2^99987522 is an apocalyptic number.

99987522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99987522 is a wasteful number, since it uses less digits than its factorization.

99987522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16664592.

The product of its digits is 816480, while the sum is 51.

The square root of 99987522 is about 9999.3760805362. The cubic root of 99987522 is about 464.1395766431.

The spelling of 99987522 in words is "ninety-nine million, nine hundred eighty-seven thousand, five hundred twenty-two".