1155211 has 2 divisors, whose sum is σ = 1155212. Its totient is φ = 1155210.

The previous prime is 1155179. The next prime is 1155223. The reversal of 1155211 is 1125511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155211 - 2⁵ = 1155179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1155311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577605 + 577606.

It is an arithmetic number, because the mean of its divisors is an integer number (577606).

2^1155211 is an apocalyptic number.

1155211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155211 is an equidigital number, since it uses as much as digits as its factorization.

1155211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50, while the sum is 16.

The square root of 1155211 is about 1074.8074246115. The cubic root of 1155211 is about 104.9269635700.

The spelling of 1155211 in words is "one million, one hundred fifty-five thousand, two hundred eleven".