85581275 has 36 divisors (see below), whose sum is σ = 120377712. Its totient is φ = 59885760.

The previous prime is 85581271. The next prime is 85581277. The reversal of 85581275 is 57218558.

It is not a de Polignac number, because 85581275 - 2² = 85581271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85581271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 799772 + ... + 799878.

Almost surely, 2^85581275 is an apocalyptic number.

85581275 is a deficient number, since it is larger than the sum of its proper divisors (34796437).

85581275 is a wasteful number, since it uses less digits than its factorization.

85581275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 148 counting only the distinct ones).

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

The square root of 85581275 is about 9251.0148091980. The cubic root of 85581275 is about 440.6829528255.

The spelling of 85581275 in words is "eighty-five million, five hundred eighty-one thousand, two hundred seventy-five".