99545281 has 8 divisors (see below), whose sum is σ = 111530304. Its totient is φ = 88049520.

The previous prime is 99545273. The next prime is 99545287. The reversal of 99545281 is 18254599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99545281 - 2³ = 99545273 is a prime.

It is a super-2 number, since 2×99545281² = 19818525938737922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99545287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121885 + ... + 122698.

It is an arithmetic number, because the mean of its divisors is an integer number (13941288).

Almost surely, 2^99545281 is an apocalyptic number.

It is an amenable number.

99545281 is a deficient number, since it is larger than the sum of its proper divisors (11985023).

99545281 is a wasteful number, since it uses less digits than its factorization.

99545281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244631.

The product of its digits is 129600, while the sum is 43.

The square root of 99545281 is about 9977.2381448976. The cubic root of 99545281 is about 463.4542747389.

The spelling of 99545281 in words is "ninety-nine million, five hundred forty-five thousand, two hundred eighty-one".