220013453 has 6 divisors (see below), whose sum is σ = 241833102. Its totient is φ = 200012120.

The previous prime is 220013449. The next prime is 220013489. The reversal of 220013453 is 354310022.

It is a happy number.

220013453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 167624809 + 52388644 = 12947^2 + 7238^2 .

It is not a de Polignac number, because 220013453 - 2² = 220013449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220013753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 909026 + ... + 909267.

It is an arithmetic number, because the mean of its divisors is an integer number (40305517).

Almost surely, 2^220013453 is an apocalyptic number.

It is an amenable number.

220013453 is a deficient number, since it is larger than the sum of its proper divisors (21819649).

220013453 is a wasteful number, since it uses less digits than its factorization.

220013453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818315 (or 1818304 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 220013453 is about 14832.8504677961. The cubic root of 220013453 is about 603.6933784615.

Adding to 220013453 its reverse (354310022), we get a palindrome (574323475).

The spelling of 220013453 in words is "two hundred twenty million, thirteen thousand, four hundred fifty-three".