1115287 has 4 divisors (see below), whose sum is σ = 1151296. Its totient is φ = 1079280.

The previous prime is 1115273. The next prime is 1115297. The reversal of 1115287 is 7825111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1115287 - 2¹¹ = 1113239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17958 + ... + 18019.

It is an arithmetic number, because the mean of its divisors is an integer number (287824).

2^1115287 is an apocalyptic number.

1115287 is a deficient number, since it is larger than the sum of its proper divisors (36009).

1115287 is an equidigital number, since it uses as much as digits as its factorization.

1115287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36008.

The product of its digits is 560, while the sum is 25.

The square root of 1115287 is about 1056.0714937920. The cubic root of 1115287 is about 103.7040092284.

The spelling of 1115287 in words is "one million, one hundred fifteen thousand, two hundred eighty-seven".