166532827 has 4 divisors (see below), whose sum is σ = 166561416. Its totient is φ = 166504240.

The previous prime is 166532809. The next prime is 166532831. The reversal of 166532827 is 728235661.

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

It is a cyclic number.

It is not a de Polignac number, because 166532827 - 2¹¹ = 166530779 is a prime.

It is a super-2 number, since 2×166532827² = 55466364937223858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166532827.

It is not an unprimeable number, because it can be changed into a prime (166532887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2074 + ... + 18367.

It is an arithmetic number, because the mean of its divisors is an integer number (41640354).

Almost surely, 2^166532827 is an apocalyptic number.

166532827 is a deficient number, since it is larger than the sum of its proper divisors (28589).

166532827 is an equidigital number, since it uses as much as digits as its factorization.

166532827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28588.

The product of its digits is 120960, while the sum is 40.

The square root of 166532827 is about 12904.7598582848. The cubic root of 166532827 is about 550.1738590856.

The spelling of 166532827 in words is "one hundred sixty-six million, five hundred thirty-two thousand, eight hundred twenty-seven".