22555541 has 2 divisors, whose sum is σ = 22555542. Its totient is φ = 22555540.

The previous prime is 22555531. The next prime is 22555553. The reversal of 22555541 is 14555522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21585316 + 970225 = 4646^2 + 985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22555541 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22555531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277770 + 11277771.

It is an arithmetic number, because the mean of its divisors is an integer number (11277771).

Almost surely, 2^22555541 is an apocalyptic number.

It is an amenable number.

22555541 is a deficient number, since it is larger than the sum of its proper divisors (1).

22555541 is an equidigital number, since it uses as much as digits as its factorization.

22555541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10000, while the sum is 29.

The square root of 22555541 is about 4749.2674171918. The cubic root of 22555541 is about 282.5429114860.

The spelling of 22555541 in words is "twenty-two million, five hundred fifty-five thousand, five hundred forty-one".