99531504 has 100 divisors (see below), whose sum is σ = 293028120. Its totient is φ = 32607360.

The previous prime is 99531503. The next prime is 99531529. The reversal of 99531504 is 40513599.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99531503) 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 19 ways as a sum of consecutive naturals, for example, 78427 + ... + 79685.

Almost surely, 2^99531504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99531504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146514060).

99531504 is an abundant number, since it is smaller than the sum of its proper divisors (193496616).

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

99531504 is a wasteful number, since it uses less digits than its factorization.

99531504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 99531504 is about 9976.5476994800. The cubic root of 99531504 is about 463.4328931658.

The spelling of 99531504 in words is "ninety-nine million, five hundred thirty-one thousand, five hundred four".