99555750 has 256 divisors, whose sum is σ = 329472000. Its totient is φ = 22226400.

The previous prime is 99555737. The next prime is 99555751. The reversal of 99555750 is 5755599.

99555750 is a `hidden beast` number, since 9 + 95 + 557 + 5 + 0 = 666.

It is a super-2 number, since 2×99555750² = 19822694716125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 99555696 and 99555705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99555751) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2315229 + ... + 2315271.

It is an arithmetic number, because the mean of its divisors is an integer number (1287000).

Almost surely, 2^99555750 is an apocalyptic number.

99555750 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 99555750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164736000).

99555750 is an abundant number, since it is smaller than the sum of its proper divisors (229916250).

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

99555750 is a wasteful number, since it uses less digits than its factorization.

99555750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 354375, while the sum is 45.

The square root of 99555750 is about 9977.7627752919. The cubic root of 99555750 is about 463.4705210564.

The spelling of 99555750 in words is "ninety-nine million, five hundred fifty-five thousand, seven hundred fifty".