220108549 has 4 divisors (see below), whose sum is σ = 220405536. Its totient is φ = 219811564.

The previous prime is 220108547. The next prime is 220108589. The reversal of 220108549 is 945801022.

220108549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220108549 - 2¹ = 220108547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220108549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220108543) 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, 147379 + ... + 148864.

It is an arithmetic number, because the mean of its divisors is an integer number (55101384).

Almost surely, 2^220108549 is an apocalyptic number.

It is an amenable number.

220108549 is a deficient number, since it is larger than the sum of its proper divisors (296987).

220108549 is an equidigital number, since it uses as much as digits as its factorization.

220108549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296986.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 220108549 is about 14836.0557089814. The cubic root of 220108549 is about 603.7803436834.

The spelling of 220108549 in words is "two hundred twenty million, one hundred eight thousand, five hundred forty-nine".