22818401 has 2 divisors, whose sum is σ = 22818402. Its totient is φ = 22818400.

The previous prime is 22818361. The next prime is 22818407. The reversal of 22818401 is 10481822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22657600 + 160801 = 4760^2 + 401^2 .

It is a cyclic number.

It is not a de Polignac number, because 22818401 - 2¹⁸ = 22556257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22818407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11409200 + 11409201.

It is an arithmetic number, because the mean of its divisors is an integer number (11409201).

Almost surely, 2^22818401 is an apocalyptic number.

It is an amenable number.

22818401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22818401 is an equidigital number, since it uses as much as digits as its factorization.

22818401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 22818401 is about 4776.8609986057. The cubic root of 22818401 is about 283.6362507315.

The spelling of 22818401 in words is "twenty-two million, eight hundred eighteen thousand, four hundred one".