158208857 has 2 divisors, whose sum is σ = 158208858. Its totient is φ = 158208856.

The previous prime is 158208829. The next prime is 158208863. The reversal of 158208857 is 758802851.

158208857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134189056 + 24019801 = 11584^2 + 4901^2 .

It is a cyclic number.

It is not a de Polignac number, because 158208857 - 2¹⁸ = 157946713 is a prime.

It is a Chen prime.

It is equal to p_8879651 and since 158208857 and 8879651 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (158202857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79104428 + 79104429.

It is an arithmetic number, because the mean of its divisors is an integer number (79104429).

Almost surely, 2^158208857 is an apocalyptic number.

It is an amenable number.

158208857 is a deficient number, since it is larger than the sum of its proper divisors (1).

158208857 is an equidigital number, since it uses as much as digits as its factorization.

158208857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179200, while the sum is 44.

The square root of 158208857 is about 12578.1102316683. The cubic root of 158208857 is about 540.8501207169.

The spelling of 158208857 in words is "one hundred fifty-eight million, two hundred eight thousand, eight hundred fifty-seven".