99241257 has 16 divisors (see below), whose sum is σ = 140417280. Its totient is φ = 62130432.

The previous prime is 99241243. The next prime is 99241267. The reversal of 99241257 is 75214299.

It is not a de Polignac number, because 99241257 - 2⁶ = 99241193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99241217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24048 + ... + 27870.

It is an arithmetic number, because the mean of its divisors is an integer number (8776080).

Almost surely, 2^99241257 is an apocalyptic number.

It is an amenable number.

99241257 is a deficient number, since it is larger than the sum of its proper divisors (41176023).

99241257 is a wasteful number, since it uses less digits than its factorization.

99241257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4352.

The product of its digits is 45360, while the sum is 39.

The square root of 99241257 is about 9961.9906143300. The cubic root of 99241257 is about 462.9819774141.

The spelling of 99241257 in words is "ninety-nine million, two hundred forty-one thousand, two hundred fifty-seven".