166552203 has 6 divisors (see below), whose sum is σ = 222099412. Its totient is φ = 111019900.

The previous prime is 166552193. The next prime is 166552277. The reversal of 166552203 is 302255661.

It is not a de Polignac number, because 166552203 - 2⁵ = 166552171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166552283) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18628 + ... + 26078.

Almost surely, 2^166552203 is an apocalyptic number.

166552203 is a deficient number, since it is larger than the sum of its proper divisors (55547209).

166552203 is an frugal number, since it uses more digits than its factorization.

166552203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14905 (or 7454 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 166552203 is about 12905.5105671957. The cubic root of 166552203 is about 550.1951957304.

Multiplying 166552203 by its product of nonzero digits (10800), we get a square (1798763792400 = 1341180²).

The spelling of 166552203 in words is "one hundred sixty-six million, five hundred fifty-two thousand, two hundred three".