99530553 has 8 divisors (see below), whose sum is σ = 136988416. Its totient is φ = 64213200.

The previous prime is 99530549. The next prime is 99530579. The reversal of 99530553 is 35503599.

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

It is not a de Polignac number, because 99530553 - 2² = 99530549 is a prime.

It is the 9977-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99530503) by changing a digit.

It is a nontrivial repunit in base 9976.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535018 + ... + 535203.

It is an arithmetic number, because the mean of its divisors is an integer number (17123552).

Almost surely, 2^99530553 is an apocalyptic number.

99530553 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

99530553 is a deficient number, since it is larger than the sum of its proper divisors (37457863).

99530553 is a wasteful number, since it uses less digits than its factorization.

99530553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070255.

The product of its (nonzero) digits is 91125, while the sum is 39.

The square root of 99530553 is about 9976.5000375883. The cubic root of 99530553 is about 463.4314171638.

The spelling of 99530553 in words is "ninety-nine million, five hundred thirty thousand, five hundred fifty-three".