85879155 has 32 divisors (see below), whose sum is σ = 147901248. Its totient is φ = 42393600.

The previous prime is 85879151. The next prime is 85879159. The reversal of 85879155 is 55197858.

It is an interprime number because it is at equal distance from previous prime (85879151) and next prime (85879159).

It is not a de Polignac number, because 85879155 - 2² = 85879151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85879151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12795 + ... + 18315.

It is an arithmetic number, because the mean of its divisors is an integer number (4621914).

Almost surely, 2^85879155 is an apocalyptic number.

85879155 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85879155 is a deficient number, since it is larger than the sum of its proper divisors (62022093).

85879155 is a wasteful number, since it uses less digits than its factorization.

85879155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5607.

The product of its digits is 504000, while the sum is 48.

The square root of 85879155 is about 9267.1006792848. The cubic root of 85879155 is about 441.1936511009.

The spelling of 85879155 in words is "eighty-five million, eight hundred seventy-nine thousand, one hundred fifty-five".