99550507 has 12 divisors (see below), whose sum is σ = 117274080. Its totient is φ = 84245616.

The previous prime is 99550489. The next prime is 99550511. The reversal of 99550507 is 70505599.

It is a de Polignac number, because none of the positive numbers 2^k-99550507 is a prime.

It is the 9978-th Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 99550507.

It is not an unprimeable number, because it can be changed into a prime (99520507) by changing a digit.

It is a nontrivial repunit in base 9977.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8988 + ... + 16729.

It is an arithmetic number, because the mean of its divisors is an integer number (9772840).

Almost surely, 2^99550507 is an apocalyptic number.

99550507 is a deficient number, since it is larger than the sum of its proper divisors (17723573).

99550507 is a wasteful number, since it uses less digits than its factorization.

99550507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25810 (or 25803 counting only the distinct ones).

The product of its (nonzero) digits is 70875, while the sum is 40.

The square root of 99550507 is about 9977.5000375846. The cubic root of 99550507 is about 463.4623848493.

The spelling of 99550507 in words is "ninety-nine million, five hundred fifty thousand, five hundred seven".