220003545 has 64 divisors (see below), whose sum is σ = 385413120. Its totient is φ = 106748928.

The previous prime is 220003513. The next prime is 220003573. The reversal of 220003545 is 545300022.

It is not a de Polignac number, because 220003545 - 2⁵ = 220003513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1349634 + ... + 1349796.

It is an arithmetic number, because the mean of its divisors is an integer number (6022080).

Almost surely, 2^220003545 is an apocalyptic number.

It is an amenable number.

220003545 is a deficient number, since it is larger than the sum of its proper divisors (165409575).

220003545 is a wasteful number, since it uses less digits than its factorization.

220003545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 220003545 is about 14832.5164756355. The cubic root of 220003545 is about 603.6843161615.

Adding to 220003545 its reverse (545300022), we get a palindrome (765303567).

The spelling of 220003545 in words is "two hundred twenty million, three thousand, five hundred forty-five".