22453 has 2 divisors, whose sum is σ = 22454.
Its totient is φ = 22452.
The previous prime is 22447. The next prime is 22469. The reversal of 22453 is 35422.
It is an a-pointer prime, because the next prime (22469) can be obtained adding 22453 to its sum of digits (16).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 14884 + 7569 = 122^2 + 87^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-22453 is a prime.
It is a plaindrome in base 15.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (22433) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11226 + 11227.
It is an arithmetic number, because the mean of its divisors is an integer number (11227).
222453 is an apocalyptic number.
It is an amenable number.
22453 is a deficient number, since it is larger than the sum of its proper divisors (1).
22453 is an equidigital number, since it uses as much as digits as its factorization.
22453 is an evil number, because the sum of its binary digits is even.
The product of its digits is 240, while the sum is 16.
The square root of 22453 is about 149.8432514330.
The cubic root of 22453 is about 28.2114099662.
Adding to 22453 its reverse (35422), we get a palindrome (57875).
The spelling of 22453 in words is "twenty-two thousand, four hundred fifty-three".