220541191 has 4 divisors (see below), whose sum is σ = 237505912. Its totient is φ = 203576472.

The previous prime is 220541177. The next prime is 220541203. The reversal of 220541191 is 191145022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220541191 - 2⁵ = 220541159 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 (220541131) 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, 8482341 + ... + 8482366.

It is an arithmetic number, because the mean of its divisors is an integer number (59376478).

Almost surely, 2^220541191 is an apocalyptic number.

220541191 is a deficient number, since it is larger than the sum of its proper divisors (16964721).

220541191 is a wasteful number, since it uses less digits than its factorization.

220541191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16964720.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 220541191 is about 14850.6293132648. The cubic root of 220541191 is about 604.1756785803.

The spelling of 220541191 in words is "two hundred twenty million, five hundred forty-one thousand, one hundred ninety-one".