22554361 has 2 divisors, whose sum is σ = 22554362. Its totient is φ = 22554360.

The previous prime is 22554347. The next prime is 22554377. The reversal of 22554361 is 16345522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 1806336 = 4555^2 + 1344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22554361 is a prime.

It is not a weakly prime, because it can be changed into another prime (22554331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277180 + 11277181.

It is an arithmetic number, because the mean of its divisors is an integer number (11277181).

Almost surely, 2^22554361 is an apocalyptic number.

It is an amenable number.

22554361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22554361 is an equidigital number, since it uses as much as digits as its factorization.

22554361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 22554361 is about 4749.1431858810. The cubic root of 22554361 is about 282.5379842939.

Adding to 22554361 its reverse (16345522), we get a palindrome (38899883).

The spelling of 22554361 in words is "twenty-two million, five hundred fifty-four thousand, three hundred sixty-one".