1145587 has 4 divisors (see below), whose sum is σ = 1185120. Its totient is φ = 1106056.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145587 is 7855411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145587 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145537) 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, 19723 + ... + 19780.

It is an arithmetic number, because the mean of its divisors is an integer number (296280).

2^1145587 is an apocalyptic number.

1145587 is a deficient number, since it is larger than the sum of its proper divisors (39533).

1145587 is an equidigital number, since it uses as much as digits as its factorization.

1145587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39532.

The product of its digits is 5600, while the sum is 31.

The square root of 1145587 is about 1070.3209798934. The cubic root of 1145587 is about 104.6347703711.

The spelling of 1145587 in words is "one million, one hundred forty-five thousand, five hundred eighty-seven".