1051191227 has 2 divisors, whose sum is σ = 1051191228. Its totient is φ = 1051191226.

The previous prime is 1051191221. The next prime is 1051191299. The reversal of 1051191227 is 7221911501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1051191227 - 2²⁰ = 1050142651 is a prime.

It is a super-2 number, since 2×1051191227² = 2210005991443531058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1051191227.

It is not a weakly prime, because it can be changed into another prime (1051191221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525595613 + 525595614.

It is an arithmetic number, because the mean of its divisors is an integer number (525595614).

Almost surely, 2^1051191227 is an apocalyptic number.

1051191227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051191227 is an equidigital number, since it uses as much as digits as its factorization.

1051191227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 29.

The square root of 1051191227 is about 32422.0793133321. The cubic root of 1051191227 is about 1016.7805794186.

The spelling of 1051191227 in words is "one billion, fifty-one million, one hundred ninety-one thousand, two hundred twenty-seven".