99017531 has 4 divisors (see below), whose sum is σ = 104229000. Its totient is φ = 93806064.

The previous prime is 99017489. The next prime is 99017533. The reversal of 99017531 is 13571099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13571099 = 3049 ⋅4451.

It is a cyclic number.

It is not a de Polignac number, because 99017531 - 2⁶ = 99017467 is a prime.

It is a super-2 number, since 2×99017531² = 19608942890671922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99017491 and 99017500.

It is not an unprimeable number, because it can be changed into a prime (99017533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2605706 + ... + 2605743.

It is an arithmetic number, because the mean of its divisors is an integer number (26057250).

Almost surely, 2^99017531 is an apocalyptic number.

99017531 is a deficient number, since it is larger than the sum of its proper divisors (5211469).

99017531 is a wasteful number, since it uses less digits than its factorization.

99017531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5211468.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 99017531 is about 9950.7552979661. The cubic root of 99017531 is about 462.6338055510.

The spelling of 99017531 in words is "ninety-nine million, seventeen thousand, five hundred thirty-one".