85270181 has 16 divisors (see below), whose sum is σ = 93726720. Its totient is φ = 77226240.

The previous prime is 85270169. The next prime is 85270183. The reversal of 85270181 is 18107258.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-85270181 is a prime.

It is a super-2 number, since 2×85270181² = 14542007535545522, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85270183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125615 + ... + 126291.

It is an arithmetic number, because the mean of its divisors is an integer number (5857920).

Almost surely, 2^85270181 is an apocalyptic number.

It is an amenable number.

85270181 is a deficient number, since it is larger than the sum of its proper divisors (8456539).

85270181 is a wasteful number, since it uses less digits than its factorization.

85270181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 85270181 is about 9234.1854540614. The cubic root of 85270181 is about 440.1483332526.

The spelling of 85270181 in words is "eighty-five million, two hundred seventy thousand, one hundred eighty-one".