99506250 has 144 divisors (see below), whose sum is σ = 283341240. Its totient is φ = 25200000.

The previous prime is 99506233. The next prime is 99506261. The reversal of 99506250 is 5260599.

It can be written as a sum of positive squares in 12 ways, for example, as 73770921 + 25735329 = 8589^2 + 5073^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1631220 + ... + 1631280.

Almost surely, 2^99506250 is an apocalyptic number.

99506250 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99506250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141670620).

99506250 is an abundant number, since it is smaller than the sum of its proper divisors (183834990).

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

99506250 is a wasteful number, since it uses less digits than its factorization.

99506250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 100 counting only the distinct ones).

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

The square root of 99506250 is about 9975.2819509024. The cubic root of 99506250 is about 463.3936944404.

The spelling of 99506250 in words is "ninety-nine million, five hundred six thousand, two hundred fifty".