1155223 has 2 divisors, whose sum is σ = 1155224. Its totient is φ = 1155222.

The previous prime is 1155211. The next prime is 1155233. The reversal of 1155223 is 3225511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155223 - 2¹⁷ = 1024151 is a prime.

It is a super-4 number, since 4×1155223⁴ (a number of 25 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1155223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577611 + 577612.

It is an arithmetic number, because the mean of its divisors is an integer number (577612).

2^1155223 is an apocalyptic number.

1155223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155223 is an equidigital number, since it uses as much as digits as its factorization.

1155223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 19.

The square root of 1155223 is about 1074.8130069924. The cubic root of 1155223 is about 104.9273268858.

It can be divided in two parts, 1155 and 223, that added together give a triangular number (1378 = T₅₂).

The spelling of 1155223 in words is "one million, one hundred fifty-five thousand, two hundred twenty-three".