1125566 has 8 divisors (see below), whose sum is σ = 1818264. Its totient is φ = 519480.

The previous prime is 1125559. The next prime is 1125569. The reversal of 1125566 is 6655211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 43291 = 1125566 / (1 + 1 + 2 + 5 + 5 + 6 + 6).

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 (1125569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21620 + ... + 21671.

It is an arithmetic number, because the mean of its divisors is an integer number (227283).

2^1125566 is an apocalyptic number.

1125566 is a deficient number, since it is larger than the sum of its proper divisors (692698).

1125566 is a wasteful number, since it uses less digits than its factorization.

1125566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43306.

The product of its digits is 1800, while the sum is 26.

The square root of 1125566 is about 1060.9269531876. The cubic root of 1125566 is about 104.0216301164.

The spelling of 1125566 in words is "one million, one hundred twenty-five thousand, five hundred sixty-six".