85439255 has 16 divisors (see below), whose sum is σ = 115458048. Its totient is φ = 60132000.

The previous prime is 85439251. The next prime is 85439281. The reversal of 85439255 is 55293458.

It is not a de Polignac number, because 85439255 - 2² = 85439251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85439251) 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, 23351 + ... + 26760.

It is an arithmetic number, because the mean of its divisors is an integer number (7216128).

Almost surely, 2^85439255 is an apocalyptic number.

85439255 is a deficient number, since it is larger than the sum of its proper divisors (30018793).

85439255 is a wasteful number, since it uses less digits than its factorization.

85439255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50158.

The product of its digits is 216000, while the sum is 41.

The square root of 85439255 is about 9243.3357074165. The cubic root of 85439255 is about 440.4390503878.

The spelling of 85439255 in words is "eighty-five million, four hundred thirty-nine thousand, two hundred fifty-five".