1115089 has 2 divisors, whose sum is σ = 1115090. Its totient is φ = 1115088.

The previous prime is 1115071. The next prime is 1115099. The reversal of 1115089 is 9805111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 33489 = 1040^2 + 183^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115089 - 2⁵ = 1115057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557544 + 557545.

It is an arithmetic number, because the mean of its divisors is an integer number (557545).

2^1115089 is an apocalyptic number.

It is an amenable number.

1115089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115089 is an equidigital number, since it uses as much as digits as its factorization.

1115089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 1115089 is about 1055.9777459776. The cubic root of 1115089 is about 103.6978719116.

The spelling of 1115089 in words is "one million, one hundred fifteen thousand, eighty-nine".