8857157 has 2 divisors, whose sum is σ = 8857158. Its totient is φ = 8857156.

The previous prime is 8857133. The next prime is 8857159. The reversal of 8857157 is 7517588.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8288641 + 568516 = 2879^2 + 754^2 .

It is a cyclic number.

It is not a de Polignac number, because 8857157 - 2⁸ = 8856901 is a prime.

Together with 8857159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8857159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4428578 + 4428579.

It is an arithmetic number, because the mean of its divisors is an integer number (4428579).

Almost surely, 2^8857157 is an apocalyptic number.

It is an amenable number.

8857157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8857157 is an equidigital number, since it uses as much as digits as its factorization.

8857157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78400, while the sum is 41.

The square root of 8857157 is about 2976.0976126465. The cubic root of 8857157 is about 206.9020439388.

The spelling of 8857157 in words is "eight million, eight hundred fifty-seven thousand, one hundred fifty-seven".