220533445 has 16 divisors (see below), whose sum is σ = 293595840. Its totient is φ = 157667200.

The previous prime is 220533377. The next prime is 220533461. The reversal of 220533445 is 544335022.

It is not a de Polignac number, because 220533445 - 2¹⁷ = 220402373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30736 + ... + 37225.

It is an arithmetic number, because the mean of its divisors is an integer number (18349740).

Almost surely, 2^220533445 is an apocalyptic number.

It is an amenable number.

220533445 is a deficient number, since it is larger than the sum of its proper divisors (73062395).

220533445 is a wasteful number, since it uses less digits than its factorization.

220533445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68036.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 220533445 is about 14850.3685139460. The cubic root of 220533445 is about 604.1686050724.

Adding to 220533445 its reverse (544335022), we get a palindrome (764868467).

The spelling of 220533445 in words is "two hundred twenty million, five hundred thirty-three thousand, four hundred forty-five".