1150227581 has 2 divisors, whose sum is σ = 1150227582. Its totient is φ = 1150227580.

The previous prime is 1150227577. The next prime is 1150227583. The reversal of 1150227581 is 1857220511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 672105625 + 478121956 = 25925^2 + 21866^2 .

It is a cyclic number.

It is not a de Polignac number, because 1150227581 - 2² = 1150227577 is a prime.

It is a super-2 number, since 2×1150227581² = 2646046976186223122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1150227583, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1150227583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575113790 + 575113791.

It is an arithmetic number, because the mean of its divisors is an integer number (575113791).

Almost surely, 2^1150227581 is an apocalyptic number.

It is an amenable number.

1150227581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150227581 is an equidigital number, since it uses as much as digits as its factorization.

1150227581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 1150227581 is about 33915.0052484147. The cubic root of 1150227581 is about 1047.7586599860.

The spelling of 1150227581 in words is "one billion, one hundred fifty million, two hundred twenty-seven thousand, five hundred eighty-one".