99570157 has 2 divisors, whose sum is σ = 99570158. Its totient is φ = 99570156.

The previous prime is 99570131. The next prime is 99570167. The reversal of 99570157 is 75107599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99321156 + 249001 = 9966^2 + 499^2 .

It is a cyclic number.

It is not a de Polignac number, because 99570157 - 2²³ = 91181549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99570167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49785078 + 49785079.

It is an arithmetic number, because the mean of its divisors is an integer number (49785079).

Almost surely, 2^99570157 is an apocalyptic number.

It is an amenable number.

99570157 is a deficient number, since it is larger than the sum of its proper divisors (1).

99570157 is an equidigital number, since it uses as much as digits as its factorization.

99570157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99225, while the sum is 43.

The square root of 99570157 is about 9978.4847046032. The cubic root of 99570157 is about 463.4928766971.

The spelling of 99570157 in words is "ninety-nine million, five hundred seventy thousand, one hundred fifty-seven".