1095781 has 2 divisors, whose sum is σ = 1095782. Its totient is φ = 1095780.

The previous prime is 1095779. The next prime is 1095791. The reversal of 1095781 is 1875901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1083681 + 12100 = 1041^2 + 110^2 .

It is an emirp because it is prime and its reverse (1875901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1095781 - 2¹ = 1095779 is a prime.

It is a super-2 number, since 2×1095781² = 2401471999922, which contains 22 as substring.

Together with 1095779, it forms a pair of twin primes.

1095781 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1095751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547890 + 547891.

It is an arithmetic number, because the mean of its divisors is an integer number (547891).

2^1095781 is an apocalyptic number.

It is an amenable number.

1095781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1095781 is an equidigital number, since it uses as much as digits as its factorization.

1095781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1095781 is about 1046.7955865402. The cubic root of 1095781 is about 103.0958670079.

The spelling of 1095781 in words is "one million, ninety-five thousand, seven hundred eighty-one".