166282563 has 4 divisors (see below), whose sum is σ = 221710088. Its totient is φ = 110855040.

The previous prime is 166282561. The next prime is 166282573. The reversal of 166282563 is 365282661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365282661 = 3 ⋅121760887.

It is not a de Polignac number, because 166282563 - 2¹ = 166282561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166282561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27713758 + ... + 27713763.

It is an arithmetic number, because the mean of its divisors is an integer number (55427522).

Almost surely, 2^166282563 is an apocalyptic number.

166282563 is a deficient number, since it is larger than the sum of its proper divisors (55427525).

166282563 is an equidigital number, since it uses as much as digits as its factorization.

166282563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55427524.

The product of its digits is 103680, while the sum is 39.

The square root of 166282563 is about 12895.0596353797. The cubic root of 166282563 is about 549.8981221769.

It can be divided in two parts, 16628 and 2563, that added together give a palindrome (19191).

The spelling of 166282563 in words is "one hundred sixty-six million, two hundred eighty-two thousand, five hundred sixty-three".