99555223 has 4 divisors (see below), whose sum is σ = 99579808. Its totient is φ = 99530640.

The previous prime is 99555221. The next prime is 99555227. The reversal of 99555223 is 32255599.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99555223 - 2¹ = 99555221 is a prime.

It is a super-2 number, since 2×99555223² = 19822484853159458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99555221) 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, 4623 + ... + 14848.

It is an arithmetic number, because the mean of its divisors is an integer number (24894952).

Almost surely, 2^99555223 is an apocalyptic number.

99555223 is a deficient number, since it is larger than the sum of its proper divisors (24585).

99555223 is a wasteful number, since it uses less digits than its factorization.

99555223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24584.

The product of its digits is 121500, while the sum is 40.

The square root of 99555223 is about 9977.7363665312. The cubic root of 99555223 is about 463.4697032587.

The spelling of 99555223 in words is "ninety-nine million, five hundred fifty-five thousand, two hundred twenty-three".