220855459 has 4 divisors (see below), whose sum is σ = 240933240. Its totient is φ = 200777680.

The previous prime is 220855457. The next prime is 220855471. The reversal of 220855459 is 954558022.

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 220855459 - 2¹ = 220855457 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220855451) 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, 10038874 + ... + 10038895.

It is an arithmetic number, because the mean of its divisors is an integer number (60233310).

Almost surely, 2^220855459 is an apocalyptic number.

220855459 is a deficient number, since it is larger than the sum of its proper divisors (20077781).

220855459 is a wasteful number, since it uses less digits than its factorization.

220855459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20077780.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 220855459 is about 14861.2065122587. The cubic root of 220855459 is about 604.4625229015.

The spelling of 220855459 in words is "two hundred twenty million, eight hundred fifty-five thousand, four hundred fifty-nine".