85031155 has 16 divisors (see below), whose sum is σ = 111495168. Its totient is φ = 61740000.

The previous prime is 85031153. The next prime is 85031159. The reversal of 85031155 is 55113058.

It is not a de Polignac number, because 85031155 - 2¹ = 85031153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85031153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57070 + ... + 58540.

It is an arithmetic number, because the mean of its divisors is an integer number (6968448).

Almost surely, 2^85031155 is an apocalyptic number.

85031155 is a deficient number, since it is larger than the sum of its proper divisors (26464013).

85031155 is a wasteful number, since it uses less digits than its factorization.

85031155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 85031155 is about 9221.2339196010. The cubic root of 85031155 is about 439.7366795671.

The spelling of 85031155 in words is "eighty-five million, thirty-one thousand, one hundred fifty-five".