166530045 has 32 divisors (see below), whose sum is σ = 307774080. Its totient is φ = 75991040.

The previous prime is 166530043. The next prime is 166530053. The reversal of 166530045 is 540035661.

It is not a de Polignac number, because 166530045 - 2¹ = 166530043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166529994 and 166530021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166530043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26880 + ... + 32489.

It is an arithmetic number, because the mean of its divisors is an integer number (9617940).

Almost surely, 2^166530045 is an apocalyptic number.

166530045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166530045 is a deficient number, since it is larger than the sum of its proper divisors (141244035).

166530045 is a wasteful number, since it uses less digits than its factorization.

166530045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59405.

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

The square root of 166530045 is about 12904.6520681497. The cubic root of 166530045 is about 550.1707954410.

The spelling of 166530045 in words is "one hundred sixty-six million, five hundred thirty thousand, forty-five".