1166558227 has 2 divisors, whose sum is σ = 1166558228. Its totient is φ = 1166558226.

The previous prime is 1166558153. The next prime is 1166558231. The reversal of 1166558227 is 7228556611.

It is a strong prime.

It is an emirp because it is prime and its reverse (7228556611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166558227 - 2²³ = 1158169619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166558287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583279113 + 583279114.

It is an arithmetic number, because the mean of its divisors is an integer number (583279114).

Almost surely, 2^1166558227 is an apocalyptic number.

1166558227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166558227 is an equidigital number, since it uses as much as digits as its factorization.

1166558227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 1166558227 is about 34154.9151221314. The cubic root of 1166558227 is about 1052.6939822212.

The spelling of 1166558227 in words is "one billion, one hundred sixty-six million, five hundred fifty-eight thousand, two hundred twenty-seven".