222553729 has 2 divisors, whose sum is σ = 222553730. Its totient is φ = 222553728.

The previous prime is 222553607. The next prime is 222553733. The reversal of 222553729 is 927355222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219484225 + 3069504 = 14815^2 + 1752^2 .

It is a cyclic number.

It is not a de Polignac number, because 222553729 - 2⁹ = 222553217 is a prime.

It is not a weakly prime, because it can be changed into another prime (222553739) 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, 111276864 + 111276865.

It is an arithmetic number, because the mean of its divisors is an integer number (111276865).

Almost surely, 2^222553729 is an apocalyptic number.

It is an amenable number.

222553729 is a deficient number, since it is larger than the sum of its proper divisors (1).

222553729 is an equidigital number, since it uses as much as digits as its factorization.

222553729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 222553729 is about 14918.2347816355. The cubic root of 222553729 is about 606.0079085259.

The spelling of 222553729 in words is "two hundred twenty-two million, five hundred fifty-three thousand, seven hundred twenty-nine".