158745857 has 2 divisors, whose sum is σ = 158745858. Its totient is φ = 158745856.

The previous prime is 158745827. The next prime is 158745871. The reversal of 158745857 is 758547851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81288256 + 77457601 = 9016^2 + 8801^2 .

It is a cyclic number.

It is not a de Polignac number, because 158745857 - 2¹⁸ = 158483713 is a prime.

It is a super-2 number, since 2×158745857² = 50400494229328898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158745827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79372928 + 79372929.

It is an arithmetic number, because the mean of its divisors is an integer number (79372929).

Almost surely, 2^158745857 is an apocalyptic number.

It is an amenable number.

158745857 is a deficient number, since it is larger than the sum of its proper divisors (1).

158745857 is an equidigital number, since it uses as much as digits as its factorization.

158745857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568000, while the sum is 50.

The square root of 158745857 is about 12599.4387573415. The cubic root of 158745857 is about 541.4613560466.

The spelling of 158745857 in words is "one hundred fifty-eight million, seven hundred forty-five thousand, eight hundred fifty-seven".