1102891 has 2 divisors, whose sum is σ = 1102892. Its totient is φ = 1102890.

The previous prime is 1102883. The next prime is 1102901. The reversal of 1102891 is 1982011.

It is a weak prime.

It is an emirp because it is prime and its reverse (1982011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1102891 - 2³ = 1102883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1102831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551445 + 551446.

It is an arithmetic number, because the mean of its divisors is an integer number (551446).

2^1102891 is an apocalyptic number.

1102891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102891 is an equidigital number, since it uses as much as digits as its factorization.

1102891 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 1102891 is about 1050.1861739711. The cubic root of 1102891 is about 103.3183664298.

The spelling of 1102891 in words is "one million, one hundred two thousand, eight hundred ninety-one".