166406252 has 6 divisors (see below), whose sum is σ = 291210948. Its totient is φ = 83203124.

The previous prime is 166406243. The next prime is 166406257. The reversal of 166406252 is 252604661.

166406252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166406257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20800778 + ... + 20800785.

It is an arithmetic number, because the mean of its divisors is an integer number (48535158).

Almost surely, 2^166406252 is an apocalyptic number.

It is an amenable number.

166406252 is a deficient number, since it is larger than the sum of its proper divisors (124804696).

166406252 is a wasteful number, since it uses less digits than its factorization.

166406252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41601567 (or 41601565 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 166406252 is about 12899.8547278642. The cubic root of 166406252 is about 550.0344353095.

The spelling of 166406252 in words is "one hundred sixty-six million, four hundred six thousand, two hundred fifty-two".