99544531 has 4 divisors (see below), whose sum is σ = 99899064. Its totient is φ = 99190000.

The previous prime is 99544519. The next prime is 99544579. The reversal of 99544531 is 13544599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13544599 = 71 ⋅190769.

It is a cyclic number.

It is not a de Polignac number, because 99544531 - 2¹⁷ = 99413459 is a prime.

It is a super-2 number, since 2×99544531² = 19818227304019922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99544031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176845 + ... + 177406.

It is an arithmetic number, because the mean of its divisors is an integer number (24974766).

Almost surely, 2^99544531 is an apocalyptic number.

99544531 is a deficient number, since it is larger than the sum of its proper divisors (354533).

99544531 is a wasteful number, since it uses less digits than its factorization.

99544531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354532.

The product of its digits is 97200, while the sum is 40.

The square root of 99544531 is about 9977.2005592751. The cubic root of 99544531 is about 463.4531108077.

The spelling of 99544531 in words is "ninety-nine million, five hundred forty-four thousand, five hundred thirty-one".