1087091 has 2 divisors, whose sum is σ = 1087092. Its totient is φ = 1087090.

The previous prime is 1087061. The next prime is 1087109. The reversal of 1087091 is 1907801.

Together with next prime (1087109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1087091 - 2⁶ = 1087027 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1087091.

It is not a weakly prime, because it can be changed into another prime (1087001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543545 + 543546.

It is an arithmetic number, because the mean of its divisors is an integer number (543546).

2^1087091 is an apocalyptic number.

1087091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087091 is an equidigital number, since it uses as much as digits as its factorization.

1087091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1087091 is about 1042.6365617990. The cubic root of 1087091 is about 102.8226123250.

The spelling of 1087091 in words is "one million, eighty-seven thousand, ninety-one".