220861255 has 8 divisors (see below), whose sum is σ = 267121152. Its totient is φ = 175297248.

The previous prime is 220861253. The next prime is 220861307. The reversal of 220861255 is 552168022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220861255 - 2¹ = 220861253 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 (220861253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173272 + ... + 174541.

It is an arithmetic number, because the mean of its divisors is an integer number (33390144).

Almost surely, 2^220861255 is an apocalyptic number.

220861255 is a deficient number, since it is larger than the sum of its proper divisors (46259897).

220861255 is a wasteful number, since it uses less digits than its factorization.

220861255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347945.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 220861255 is about 14861.4015153350. The cubic root of 220861255 is about 604.4678105742.

The spelling of 220861255 in words is "two hundred twenty million, eight hundred sixty-one thousand, two hundred fifty-five".