220306253 has 2 divisors, whose sum is σ = 220306254. Its totient is φ = 220306252.

The previous prime is 220306231. The next prime is 220306271. The reversal of 220306253 is 352603022.

It is a happy number.

220306253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213685924 + 6620329 = 14618^2 + 2573^2 .

It is a cyclic number.

It is not a de Polignac number, because 220306253 - 2¹² = 220302157 is a prime.

It is a super-2 number, since 2×220306253² = 97069690221800018, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220306223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110153126 + 110153127.

It is an arithmetic number, because the mean of its divisors is an integer number (110153127).

Almost surely, 2^220306253 is an apocalyptic number.

It is an amenable number.

220306253 is a deficient number, since it is larger than the sum of its proper divisors (1).

220306253 is an equidigital number, since it uses as much as digits as its factorization.

220306253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 220306253 is about 14842.7171703836. The cubic root of 220306253 is about 603.9610637079.

Adding to 220306253 its reverse (352603022), we get a palindrome (572909275).

The spelling of 220306253 in words is "two hundred twenty million, three hundred six thousand, two hundred fifty-three".