220545445 has 8 divisors (see below), whose sum is σ = 278583840. Its totient is φ = 167150160.

The previous prime is 220545431. The next prime is 220545449. The reversal of 220545445 is 544545022.

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

It is not a de Polignac number, because 220545445 - 2¹⁷ = 220414373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220545449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160671 + ... + 1160860.

It is an arithmetic number, because the mean of its divisors is an integer number (34822980).

Almost surely, 2^220545445 is an apocalyptic number.

It is an amenable number.

220545445 is a deficient number, since it is larger than the sum of its proper divisors (58038395).

220545445 is a wasteful number, since it uses less digits than its factorization.

220545445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321555.

The product of its (nonzero) digits is 32000, while the sum is 31.

The square root of 220545445 is about 14850.7725388277. The cubic root of 220545445 is about 604.1795631862.

The spelling of 220545445 in words is "two hundred twenty million, five hundred forty-five thousand, four hundred forty-five".