85117901 has 16 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 76148400.

The previous prime is 85117867. The next prime is 85117913. The reversal of 85117901 is 10971158.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85117901 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 (85117931) 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, 273536 + ... + 273846.

It is an arithmetic number, because the mean of its divisors is an integer number (5896800).

Almost surely, 2^85117901 is an apocalyptic number.

It is an amenable number.

85117901 is a deficient number, since it is larger than the sum of its proper divisors (9230899).

85117901 is a wasteful number, since it uses less digits than its factorization.

85117901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 85117901 is about 9225.9363210462. The cubic root of 85117901 is about 439.8861637328.

The spelling of 85117901 in words is "eighty-five million, one hundred seventeen thousand, nine hundred one".