99553559 has 8 divisors (see below), whose sum is σ = 119763840. Its totient is φ = 80840376.

The previous prime is 99553541. The next prime is 99553561. The reversal of 99553559 is 95535599.

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 99553559 - 2⁸ = 99553303 is a prime.

It is a super-2 number, since 2×99553559² = 19821822219132962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99553529) 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, 374129 + ... + 374394.

It is an arithmetic number, because the mean of its divisors is an integer number (14970480).

Almost surely, 2^99553559 is an apocalyptic number.

99553559 is a deficient number, since it is larger than the sum of its proper divisors (20210281).

99553559 is a wasteful number, since it uses less digits than its factorization.

99553559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748549.

The product of its digits is 1366875, while the sum is 50.

The square root of 99553559 is about 9977.6529805361. The cubic root of 99553559 is about 463.4671210473.

The spelling of 99553559 in words is "ninety-nine million, five hundred fifty-three thousand, five hundred fifty-nine".