1151566 has 12 divisors (see below), whose sum is σ = 1870992. Its totient is φ = 531336.

The previous prime is 1151537. The next prime is 1151569. The reversal of 1151566 is 6651511.

It is a super-2 number, since 2×1151566² = 2652208504712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1151566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1366 + ... + 2041.

It is an arithmetic number, because the mean of its divisors is an integer number (155916).

2^1151566 is an apocalyptic number.

1151566 is a deficient number, since it is larger than the sum of its proper divisors (719426).

1151566 is a wasteful number, since it uses less digits than its factorization.

1151566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435 (or 3422 counting only the distinct ones).

The product of its digits is 900, while the sum is 25.

The square root of 1151566 is about 1073.1104323414. The cubic root of 1151566 is about 104.8164897426.

Subtracting 1151566 from its reverse (6651511), we obtain a palindrome (5499945).

It can be divided in two parts, 115 and 1566, that added together give a square (1681 = 41²).

The spelling of 1151566 in words is "one million, one hundred fifty-one thousand, five hundred sixty-six".