85112381 has 8 divisors (see below), whose sum is σ = 89682720. Its totient is φ = 80551152.

The previous prime is 85112327. The next prime is 85112389. The reversal of 85112381 is 18321158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85112381 - 2¹⁸ = 84850237 is a prime.

It is a super-2 number, since 2×85112381² = 14488234798978322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85112389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26066 + ... + 29148.

It is an arithmetic number, because the mean of its divisors is an integer number (11210340).

Almost surely, 2^85112381 is an apocalyptic number.

It is an amenable number.

85112381 is a deficient number, since it is larger than the sum of its proper divisors (4570339).

85112381 is a wasteful number, since it uses less digits than its factorization.

85112381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555.

The product of its digits is 1920, while the sum is 29.

The square root of 85112381 is about 9225.6371595679. The cubic root of 85112381 is about 439.8766544753.

The spelling of 85112381 in words is "eighty-five million, one hundred twelve thousand, three hundred eighty-one".