1092181 has 2 divisors, whose sum is σ = 1092182. Its totient is φ = 1092180.

The previous prime is 1092173. The next prime is 1092191. The reversal of 1092181 is 1812901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749956 + 342225 = 866^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1092181 - 2³ = 1092173 is a prime.

It is a super-2 number, since 2×1092181² = 2385718673522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1092151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546090 + 546091.

It is an arithmetic number, because the mean of its divisors is an integer number (546091).

2^1092181 is an apocalyptic number.

It is an amenable number.

1092181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1092181 is an equidigital number, since it uses as much as digits as its factorization.

1092181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1092181 is about 1045.0746384828. The cubic root of 1092181 is about 102.9828418964.

The spelling of 1092181 in words is "one million, ninety-two thousand, one hundred eighty-one".