166550432 has 12 divisors (see below), whose sum is σ = 327896226. Its totient is φ = 83275200.

The previous prime is 166550381. The next prime is 166550437. The reversal of 166550432 is 234055661.

It can be written as a sum of positive squares in only one way, i.e., 145057936 + 21492496 = 12044^2 + 4636^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 5204701 = 166550432 / (1 + 6 + 6 + 5 + 5 + 0 + 4 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (166550437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602319 + ... + 2602382.

Almost surely, 2^166550432 is an apocalyptic number.

It is an amenable number.

166550432 is a deficient number, since it is larger than the sum of its proper divisors (161345794).

166550432 is an equidigital number, since it uses as much as digits as its factorization.

166550432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204711 (or 5204703 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 166550432 is about 12905.4419529127. The cubic root of 166550432 is about 550.1932455927.

The spelling of 166550432 in words is "one hundred sixty-six million, five hundred fifty thousand, four hundred thirty-two".