99544545 has 20 divisors (see below), whose sum is σ = 178443540. Its totient is φ = 53090208.

The previous prime is 99544519. The next prime is 99544579. The reversal of 99544545 is 54544599.

It can be written as a sum of positive squares in 2 ways, for example, as 52881984 + 46662561 = 7272^2 + 6831^2 .

It is not a de Polignac number, because 99544545 - 2⁶ = 99544481 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 99544545.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 122490 + ... + 123299.

It is an arithmetic number, because the mean of its divisors is an integer number (8922177).

Almost surely, 2^99544545 is an apocalyptic number.

It is an amenable number.

99544545 is a deficient number, since it is larger than the sum of its proper divisors (78898995).

99544545 is a wasteful number, since it uses less digits than its factorization.

99544545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245806 (or 245797 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 99544545 is about 9977.2012608747. The cubic root of 99544545 is about 463.4531325345.

It can be divided in two parts, 99 and 544545, that added together give a square (544644 = 738²).

The spelling of 99544545 in words is "ninety-nine million, five hundred forty-four thousand, five hundred forty-five".