1115579 has 2 divisors, whose sum is σ = 1115580. Its totient is φ = 1115578.

The previous prime is 1115573. The next prime is 1115581. The reversal of 1115579 is 9755111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1115579 - 2²⁰ = 67003 is a prime.

Together with 1115581, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1115573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557789 + 557790.

It is an arithmetic number, because the mean of its divisors is an integer number (557790).

2^1115579 is an apocalyptic number.

1115579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115579 is an equidigital number, since it uses as much as digits as its factorization.

1115579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1575, while the sum is 29.

The square root of 1115579 is about 1056.2097329603. The cubic root of 1115579 is about 103.7130588956.

The spelling of 1115579 in words is "one million, one hundred fifteen thousand, five hundred seventy-nine".