85187255 has 16 divisors (see below), whose sum is σ = 108475200. Its totient is φ = 64000512.

The previous prime is 85187251. The next prime is 85187261. The reversal of 85187255 is 55278158.

It is not a de Polignac number, because 85187255 - 2² = 85187251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85187251) 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, 54221 + ... + 55769.

It is an arithmetic number, because the mean of its divisors is an integer number (6779700).

Almost surely, 2^85187255 is an apocalyptic number.

85187255 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85187255 is a deficient number, since it is larger than the sum of its proper divisors (23287945).

85187255 is a wasteful number, since it uses less digits than its factorization.

85187255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218.

The product of its digits is 112000, while the sum is 41.

The square root of 85187255 is about 9229.6941986179. The cubic root of 85187255 is about 440.0056042675.

The spelling of 85187255 in words is "eighty-five million, one hundred eighty-seven thousand, two hundred fifty-five".