85192901 has 4 divisors (see below), whose sum is σ = 85332492. Its totient is φ = 85053312.

The previous prime is 85192871. The next prime is 85192909. The reversal of 85192901 is 10929158.

It is a Cunningham number, because it is equal to 9230²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10929158 = 2 ⋅5464579.

It can be written as a sum of positive squares in 2 ways, for example, as 276676 + 84916225 = 526^2 + 9215^2 .

It is a cyclic number.

It is not a de Polignac number, because 85192901 - 2¹⁸ = 84930757 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 (85192909) 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 3 ways as a sum of consecutive naturals, for example, 68876 + ... + 70101.

It is an arithmetic number, because the mean of its divisors is an integer number (21333123).

Almost surely, 2^85192901 is an apocalyptic number.

It is an amenable number.

85192901 is a deficient number, since it is larger than the sum of its proper divisors (139591).

85192901 is a wasteful number, since it uses less digits than its factorization.

85192901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139590.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 85192901 is about 9230.0000541712. Note that the first 4 decimals coincide. The cubic root of 85192901 is about 440.0153248795.

The spelling of 85192901 in words is "eighty-five million, one hundred ninety-two thousand, nine hundred one".