1145566 has 16 divisors (see below), whose sum is σ = 1782144. Its totient is φ = 552024.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145566 is 6655411.

It is an interprime number because it is at equal distance from previous prime (1145539) and next prime (1145593).

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11071 + ... + 11173.

It is an arithmetic number, because the mean of its divisors is an integer number (111384).

2^1145566 is an apocalyptic number.

1145566 is a deficient number, since it is larger than the sum of its proper divisors (636578).

1145566 is a wasteful number, since it uses less digits than its factorization.

1145566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255.

The product of its digits is 3600, while the sum is 28.

The square root of 1145566 is about 1070.3111697072. The cubic root of 1145566 is about 104.6341310064.

It can be divided in two parts, 1145 and 566, that added together give a triangular number (1711 = T₅₈).

The spelling of 1145566 in words is "one million, one hundred forty-five thousand, five hundred sixty-six".