99982557 has 12 divisors (see below), whose sum is σ = 144524640. Its totient is φ = 66606408.

The previous prime is 99982537. The next prime is 99982573. The reversal of 99982557 is 75528999.

99982557 is a `hidden beast` number, since 9 + 9 + 9 + 82 + 557 = 666.

It is not a de Polignac number, because 99982557 - 2⁷ = 99982429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99982507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12544 + ... + 18902.

It is an arithmetic number, because the mean of its divisors is an integer number (12043720).

Almost surely, 2^99982557 is an apocalyptic number.

It is an amenable number.

99982557 is a deficient number, since it is larger than the sum of its proper divisors (44542083).

99982557 is a wasteful number, since it uses less digits than its factorization.

99982557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8112 (or 8109 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 54.

The square root of 99982557 is about 9999.1278119644. The cubic root of 99982557 is about 464.1318940473.

The spelling of 99982557 in words is "ninety-nine million, nine hundred eighty-two thousand, five hundred fifty-seven".