166545824 has 12 divisors (see below), whose sum is σ = 327887154. Its totient is φ = 83272896.

The previous prime is 166545823. The next prime is 166545833. The reversal of 166545824 is 428545661.

It can be written as a sum of positive squares in only one way, i.e., 165585424 + 960400 = 12868^2 + 980^2 .

It is a super-2 number, since 2×166545824² = 55475022983677952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166545823) 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 as a sum of consecutive naturals, namely, 2602247 + ... + 2602310.

Almost surely, 2^166545824 is an apocalyptic number.

It is an amenable number.

166545824 is a deficient number, since it is larger than the sum of its proper divisors (161341330).

166545824 is an equidigital number, since it uses as much as digits as its factorization.

166545824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204567 (or 5204559 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The square root of 166545824 is about 12905.2634223405. The cubic root of 166545824 is about 550.1881714263.

The spelling of 166545824 in words is "one hundred sixty-six million, five hundred forty-five thousand, eight hundred twenty-four".