1145226287 has 2 divisors, whose sum is σ = 1145226288. Its totient is φ = 1145226286.

The previous prime is 1145226283. The next prime is 1145226319. The reversal of 1145226287 is 7826225411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145226287 - 2² = 1145226283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145226287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145226283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572613143 + 572613144.

It is an arithmetic number, because the mean of its divisors is an integer number (572613144).

Almost surely, 2^1145226287 is an apocalyptic number.

1145226287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145226287 is an equidigital number, since it uses as much as digits as its factorization.

1145226287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 1145226287 is about 33841.1921628066. The cubic root of 1145226287 is about 1046.2378703998.

The spelling of 1145226287 in words is "one billion, one hundred forty-five million, two hundred twenty-six thousand, two hundred eighty-seven".