220545045 has 128 divisors (see below), whose sum is σ = 477388800. Its totient is φ = 94431744.

The previous prime is 220545023. The next prime is 220545079. The reversal of 220545045 is 540545022.

220545045 is a `hidden beast` number, since 2 + 205 + 450 + 4 + 5 = 666.

It is not a de Polignac number, because 220545045 - 2⁸ = 220544789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1586586 + ... + 1586724.

It is an arithmetic number, because the mean of its divisors is an integer number (3729600).

Almost surely, 2^220545045 is an apocalyptic number.

It is an amenable number.

220545045 is an abundant number, since it is smaller than the sum of its proper divisors (256843755).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220545045 is a wasteful number, since it uses less digits than its factorization.

220545045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 220545045 is about 14850.7590715088. The cubic root of 220545045 is about 604.1791979221.

The spelling of 220545045 in words is "two hundred twenty million, five hundred forty-five thousand, forty-five".