220220545 has 8 divisors (see below), whose sum is σ = 278173440. Its totient is φ = 166903920.

The previous prime is 220220477. The next prime is 220220551. The reversal of 220220545 is 545022022.

It is a happy number.

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

It is not a de Polignac number, because 220220545 - 2¹¹ = 220218497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158961 + ... + 1159150.

It is an arithmetic number, because the mean of its divisors is an integer number (34771680).

Almost surely, 2^220220545 is an apocalyptic number.

It is an amenable number.

220220545 is a deficient number, since it is larger than the sum of its proper divisors (57952895).

220220545 is a wasteful number, since it uses less digits than its factorization.

220220545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318135.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 220220545 is about 14839.8296823110. The cubic root of 220220545 is about 603.8827318276.

Adding to 220220545 its reverse (545022022), we get a palindrome (765242567).

The spelling of 220220545 in words is "two hundred twenty million, two hundred twenty thousand, five hundred forty-five".