99550540 has 12 divisors (see below), whose sum is σ = 209056176. Its totient is φ = 39820208.

The previous prime is 99550531. The next prime is 99550541. The reversal of 99550540 is 4505599.

It is a self number, because there is not a number n which added to its sum of digits gives 99550540.

It is not an unprimeable number, because it can be changed into a prime (99550541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2488744 + ... + 2488783.

It is an arithmetic number, because the mean of its divisors is an integer number (17421348).

Almost surely, 2^99550540 is an apocalyptic number.

It is an amenable number.

99550540 is an abundant number, since it is smaller than the sum of its proper divisors (109505636).

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

99550540 is a wasteful number, since it uses less digits than its factorization.

99550540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977536 (or 4977534 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 99550540 is about 9977.5016913053. The cubic root of 99550540 is about 463.4624360604.

The spelling of 99550540 in words is "ninety-nine million, five hundred fifty thousand, five hundred forty".