166532603 has 2 divisors, whose sum is σ = 166532604. Its totient is φ = 166532602.

The previous prime is 166532599. The next prime is 166532621. The reversal of 166532603 is 306235661.

It is a weak prime.

It is an emirp because it is prime and its reverse (306235661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166532603 - 2² = 166532599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166532603.

It is not a weakly prime, because it can be changed into another prime (166532203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83266301 + 83266302.

It is an arithmetic number, because the mean of its divisors is an integer number (83266302).

Almost surely, 2^166532603 is an apocalyptic number.

166532603 is a deficient number, since it is larger than the sum of its proper divisors (1).

166532603 is an equidigital number, since it uses as much as digits as its factorization.

166532603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 166532603 is about 12904.7511793138. The cubic root of 166532603 is about 550.1736124096.

The spelling of 166532603 in words is "one hundred sixty-six million, five hundred thirty-two thousand, six hundred three".