202161085 has 16 divisors (see below), whose sum is σ = 278710272. Its totient is φ = 137894400.

The previous prime is 202161073. The next prime is 202161107. The reversal of 202161085 is 580161202.

It is not a de Polignac number, because 202161085 - 2⁹ = 202160573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8436 + ... + 21805.

It is an arithmetic number, because the mean of its divisors is an integer number (17419392).

Almost surely, 2^202161085 is an apocalyptic number.

It is an amenable number.

202161085 is a deficient number, since it is larger than the sum of its proper divisors (76549187).

202161085 is a wasteful number, since it uses less digits than its factorization.

202161085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30444.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 202161085 is about 14218.3362247487. The cubic root of 202161085 is about 586.9023564812.

The spelling of 202161085 in words is "two hundred two million, one hundred sixty-one thousand, eighty-five".