166424545 has 32 divisors (see below), whose sum is σ = 235146240. Its totient is φ = 110719680.

The previous prime is 166424537. The next prime is 166424551. The reversal of 166424545 is 545424661.

It is not a de Polignac number, because 166424545 - 2³ = 166424537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170910 + ... + 171880.

It is an arithmetic number, because the mean of its divisors is an integer number (7348320).

Almost surely, 2^166424545 is an apocalyptic number.

It is an amenable number.

166424545 is a deficient number, since it is larger than the sum of its proper divisors (68721695).

166424545 is an equidigital number, since it uses as much as digits as its factorization.

166424545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125.

The product of its digits is 115200, while the sum is 37.

The square root of 166424545 is about 12900.5637473717. The cubic root of 166424545 is about 550.0545896229.

The spelling of 166424545 in words is "one hundred sixty-six million, four hundred twenty-four thousand, five hundred forty-five".