1166545 has 8 divisors (see below), whose sum is σ = 1408680. Its totient is φ = 927360.

The previous prime is 1166533. The next prime is 1166549. The reversal of 1166545 is 5456611.

1166545 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 4 ways, for example, as 25921 + 1140624 = 161^2 + 1068^2 .

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

It is not a de Polignac number, because 1166545 - 2¹¹ = 1164497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261 + ... + 1549.

It is an arithmetic number, because the mean of its divisors is an integer number (176085).

2^1166545 is an apocalyptic number.

It is an amenable number.

1166545 is a deficient number, since it is larger than the sum of its proper divisors (242135).

1166545 is a wasteful number, since it uses less digits than its factorization.

1166545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

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

The square root of 1166545 is about 1080.0671275435. The cubic root of 1166545 is about 105.2690003555.

It can be divided in two parts, 1166 and 545, that added together give a triangular number (1711 = T₅₈).

The spelling of 1166545 in words is "one million, one hundred sixty-six thousand, five hundred forty-five".