220045545 has 32 divisors (see below), whose sum is σ = 391977600. Its totient is φ = 117122112.

The previous prime is 220045537. The next prime is 220045589. The reversal of 220045545 is 545540022.

220045545 is a `hidden beast` number, since 2 + 200 + 455 + 4 + 5 = 666.

220045545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220045545 - 2³ = 220045537 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81426 + ... + 84084.

It is an arithmetic number, because the mean of its divisors is an integer number (12249300).

Almost surely, 2^220045545 is an apocalyptic number.

It is an amenable number.

220045545 is a deficient number, since it is larger than the sum of its proper divisors (171932055).

220045545 is a wasteful number, since it uses less digits than its factorization.

220045545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286 (or 3280 counting only the distinct ones).

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

The square root of 220045545 is about 14833.9322163747. The cubic root of 220045545 is about 603.7227293728.

Adding to 220045545 its reverse (545540022), we get a palindrome (765585567).

The spelling of 220045545 in words is "two hundred twenty million, forty-five thousand, five hundred forty-five".