22818541 has 2 divisors, whose sum is σ = 22818542. Its totient is φ = 22818540.

The previous prime is 22818503. The next prime is 22818557. The reversal of 22818541 is 14581822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18957316 + 3861225 = 4354^2 + 1965^2 .

It is a cyclic number.

It is not a de Polignac number, because 22818541 - 2¹³ = 22810349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22818581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11409270 + 11409271.

It is an arithmetic number, because the mean of its divisors is an integer number (11409271).

Almost surely, 2^22818541 is an apocalyptic number.

It is an amenable number.

22818541 is a deficient number, since it is larger than the sum of its proper divisors (1).

22818541 is an equidigital number, since it uses as much as digits as its factorization.

22818541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 31.

The square root of 22818541 is about 4776.8756525579. The cubic root of 22818541 is about 283.6368308042.

It can be divided in two parts, 228 and 18541, that added together give a square (18769 = 137²).

The spelling of 22818541 in words is "twenty-two million, eight hundred eighteen thousand, five hundred forty-one".