852590091 has 4 divisors (see below), whose sum is σ = 1136786792. Its totient is φ = 568393392.

The previous prime is 852590087. The next prime is 852590099. The reversal of 852590091 is 190095258.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 852590091 - 2² = 852590087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (852590099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142098346 + ... + 142098351.

It is an arithmetic number, because the mean of its divisors is an integer number (284196698).

Almost surely, 2^852590091 is an apocalyptic number.

852590091 is a deficient number, since it is larger than the sum of its proper divisors (284196701).

852590091 is a wasteful number, since it uses less digits than its factorization.

852590091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284196700.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 852590091 is about 29199.1453813292. The cubic root of 852590091 is about 948.2294227000.

The spelling of 852590091 in words is "eight hundred fifty-two million, five hundred ninety thousand, ninety-one".