222645061 has 2 divisors, whose sum is σ = 222645062. Its totient is φ = 222645060.

The previous prime is 222645043. The next prime is 222645077. The reversal of 222645061 is 160546222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143256961 + 79388100 = 11969^2 + 8910^2 .

It is a cyclic number.

It is not a de Polignac number, because 222645061 - 2⁹ = 222644549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222645001) 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, 111322530 + 111322531.

It is an arithmetic number, because the mean of its divisors is an integer number (111322531).

Almost surely, 2^222645061 is an apocalyptic number.

It is an amenable number.

222645061 is a deficient number, since it is larger than the sum of its proper divisors (1).

222645061 is an equidigital number, since it uses as much as digits as its factorization.

222645061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 222645061 is about 14921.2955536709. The cubic root of 222645061 is about 606.0907953941.

The spelling of 222645061 in words is "two hundred twenty-two million, six hundred forty-five thousand, sixty-one".