220845533 has 4 divisors (see below), whose sum is σ = 220934460. Its totient is φ = 220756608.

The previous prime is 220845511. The next prime is 220845587. The reversal of 220845533 is 335548022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82500889 + 138344644 = 9083^2 + 11762^2 .

It is a cyclic number.

It is not a de Polignac number, because 220845533 - 2¹⁰ = 220844509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220845533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220845593) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 40628 + ... + 45741.

It is an arithmetic number, because the mean of its divisors is an integer number (55233615).

Almost surely, 2^220845533 is an apocalyptic number.

It is an amenable number.

220845533 is a deficient number, since it is larger than the sum of its proper divisors (88927).

220845533 is an equidigital number, since it uses as much as digits as its factorization.

220845533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88926.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 220845533 is about 14860.8725517716. The cubic root of 220845533 is about 604.4534672279.

The spelling of 220845533 in words is "two hundred twenty million, eight hundred forty-five thousand, five hundred thirty-three".