85158179 has 2 divisors, whose sum is σ = 85158180. Its totient is φ = 85158178.

The previous prime is 85158173. The next prime is 85158191. The reversal of 85158179 is 97185158.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85158179 - 2⁴ = 85158163 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (85158173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42579089 + 42579090.

It is an arithmetic number, because the mean of its divisors is an integer number (42579090).

Almost surely, 2^85158179 is an apocalyptic number.

85158179 is a deficient number, since it is larger than the sum of its proper divisors (1).

85158179 is an equidigital number, since it uses as much as digits as its factorization.

85158179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 44.

The square root of 85158179 is about 9228.1189307464. The cubic root of 85158179 is about 439.9555378626.

The spelling of 85158179 in words is "eighty-five million, one hundred fifty-eight thousand, one hundred seventy-nine".