13166541 has 12 divisors (see below), whose sum is σ = 19087068. Its totient is φ = 8745984.

The previous prime is 13166521. The next prime is 13166567. The reversal of 13166541 is 14566131.

13166541 is a `hidden beast` number, since 1 + 3 + 1 + 6 + 654 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9126441 + 4040100 = 3021^2 + 2010^2 .

It is not a de Polignac number, because 13166541 - 2⁶ = 13166477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13166521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141 + ... + 5133.

It is an arithmetic number, because the mean of its divisors is an integer number (1590589).

Almost surely, 2^13166541 is an apocalyptic number.

It is an amenable number.

13166541 is a deficient number, since it is larger than the sum of its proper divisors (5920527).

13166541 is a wasteful number, since it uses less digits than its factorization.

13166541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5292 (or 5289 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 13166541 is about 3628.5728599547. The cubic root of 13166541 is about 236.1332975302.

The spelling of 13166541 in words is "thirteen million, one hundred sixty-six thousand, five hundred forty-one".