99557775 has 48 divisors (see below), whose sum is σ = 185305600. Its totient is φ = 52397280.

The previous prime is 99557749. The next prime is 99557789. The reversal of 99557775 is 57775599.

It is not a de Polignac number, because 99557775 - 2⁵ = 99557743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52392 + ... + 54258.

Almost surely, 2^99557775 is an apocalyptic number.

99557775 is a deficient number, since it is larger than the sum of its proper divisors (85747825).

99557775 is a wasteful number, since it uses less digits than its factorization.

99557775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1954 counting only the distinct ones).

The product of its digits is 3472875, while the sum is 54.

The square root of 99557775 is about 9977.8642504295. The cubic root of 99557775 is about 463.4736634212.

The spelling of 99557775 in words is "ninety-nine million, five hundred fifty-seven thousand, seven hundred seventy-five".