1145559 has 4 divisors (see below), whose sum is σ = 1527416. Its totient is φ = 763704.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145559 is 9555411.

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

It is not a de Polignac number, because 1145559 - 2⁸ = 1145303 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190924 + ... + 190929.

It is an arithmetic number, because the mean of its divisors is an integer number (381854).

2^1145559 is an apocalyptic number.

1145559 is a deficient number, since it is larger than the sum of its proper divisors (381857).

1145559 is an equidigital number, since it uses as much as digits as its factorization.

1145559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381856.

The product of its digits is 4500, while the sum is 30.

The square root of 1145559 is about 1070.3078996251. The cubic root of 1145559 is about 104.6339178831.

The spelling of 1145559 in words is "one million, one hundred forty-five thousand, five hundred fifty-nine".