1066226257 has 2 divisors, whose sum is σ = 1066226258. Its totient is φ = 1066226256.

The previous prime is 1066226221. The next prime is 1066226261. The reversal of 1066226257 is 7526226601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686911681 + 379314576 = 26209^2 + 19476^2 .

It is an emirp because it is prime and its reverse (7526226601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1066226257 - 2²⁷ = 932008529 is a prime.

It is a super-2 number, since 2×1066226257² = 2273676862232460098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066226207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533113128 + 533113129.

It is an arithmetic number, because the mean of its divisors is an integer number (533113129).

Almost surely, 2^1066226257 is an apocalyptic number.

It is an amenable number.

1066226257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066226257 is an equidigital number, since it uses as much as digits as its factorization.

1066226257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1066226257 is about 32653.1201725042. The cubic root of 1066226257 is about 1021.6052696329.

The spelling of 1066226257 in words is "one billion, sixty-six million, two hundred twenty-six thousand, two hundred fifty-seven".