99995557 has 8 divisors (see below), whose sum is σ = 102086496. Its totient is φ = 97922352.

The previous prime is 99995551. The next prime is 99995563. The reversal of 99995557 is 75559999.

It is an interprime number because it is at equal distance from previous prime (99995551) and next prime (99995563).

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 99995557 - 2³ = 99995549 is a prime.

It is a super-2 number, since 2×99995557² = 19998222839480498, 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 (99995551) 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, 7278 + ... + 15904.

It is an arithmetic number, because the mean of its divisors is an integer number (12760812).

Almost surely, 2^99995557 is an apocalyptic number.

It is an amenable number.

99995557 is a deficient number, since it is larger than the sum of its proper divisors (2090939).

99995557 is a wasteful number, since it uses less digits than its factorization.

99995557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8867.

The product of its digits is 5740875, while the sum is 58.

The square root of 99995557 is about 9999.7778475324. Note that the first 3 decimals coincide. The cubic root of 99995557 is about 464.1520090664.

The spelling of 99995557 in words is "ninety-nine million, nine hundred ninety-five thousand, five hundred fifty-seven".