166522461 has 32 divisors (see below), whose sum is σ = 267294720. Its totient is φ = 90154944.

The previous prime is 166522439. The next prime is 166522481. The reversal of 166522461 is 164225661.

It is not a de Polignac number, because 166522461 - 2⁶ = 166522397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166522481) 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, 51066 + ... + 54228.

It is an arithmetic number, because the mean of its divisors is an integer number (8352960).

Almost surely, 2^166522461 is an apocalyptic number.

It is an amenable number.

166522461 is a deficient number, since it is larger than the sum of its proper divisors (100772259).

166522461 is a wasteful number, since it uses less digits than its factorization.

166522461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305.

The product of its digits is 17280, while the sum is 33.

The square root of 166522461 is about 12904.3582172846. The cubic root of 166522461 is about 550.1624434774.

The spelling of 166522461 in words is "one hundred sixty-six million, five hundred twenty-two thousand, four hundred sixty-one".