22020253 has 4 divisors (see below), whose sum is σ = 23315580. Its totient is φ = 20724928.

The previous prime is 22020227. The next prime is 22020277. The reversal of 22020253 is 35202022.

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 15578809 + 6441444 = 3947^2 + 2538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22020253 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 (22020203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647638 + ... + 647671.

It is an arithmetic number, because the mean of its divisors is an integer number (5828895).

Almost surely, 2^22020253 is an apocalyptic number.

It is an amenable number.

22020253 is a deficient number, since it is larger than the sum of its proper divisors (1295327).

22020253 is a wasteful number, since it uses less digits than its factorization.

22020253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295326.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 22020253 is about 4692.5742402225. The cubic root of 22020253 is about 280.2898910914.

Adding to 22020253 its reverse (35202022), we get a palindrome (57222275).

The spelling of 22020253 in words is "twenty-two million, twenty thousand, two hundred fifty-three".