222561049 has 2 divisors, whose sum is σ = 222561050. Its totient is φ = 222561048.

The previous prime is 222561043. The next prime is 222561083. The reversal of 222561049 is 940165222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160655625 + 61905424 = 12675^2 + 7868^2 .

It is a cyclic number.

It is not a de Polignac number, because 222561049 - 2⁹ = 222560537 is a prime.

It is equal to p_12255844 and since 222561049 and 12255844 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222561049.

It is not a weakly prime, because it can be changed into another prime (222561043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111280524 + 111280525.

It is an arithmetic number, because the mean of its divisors is an integer number (111280525).

Almost surely, 2^222561049 is an apocalyptic number.

It is an amenable number.

222561049 is a deficient number, since it is larger than the sum of its proper divisors (1).

222561049 is an equidigital number, since it uses as much as digits as its factorization.

222561049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 222561049 is about 14918.4801169556. The cubic root of 222561049 is about 606.0145525085.

The spelling of 222561049 in words is "two hundred twenty-two million, five hundred sixty-one thousand, forty-nine".