54666189 has 12 divisors (see below), whose sum is σ = 81685500. Its totient is φ = 35187264.

The previous prime is 54666181. The next prime is 54666191. The reversal of 54666189 is 98166645.

It can be written as a sum of positive squares in 2 ways, for example, as 9548100 + 45118089 = 3090^2 + 6717^2 .

It is not a de Polignac number, because 54666189 - 2³ = 54666181 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54666181) 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, 104464 + ... + 104985.

It is an arithmetic number, because the mean of its divisors is an integer number (6807125).

Almost surely, 2^54666189 is an apocalyptic number.

It is an amenable number.

54666189 is a deficient number, since it is larger than the sum of its proper divisors (27019311).

54666189 is a wasteful number, since it uses less digits than its factorization.

54666189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209484 (or 209481 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 54666189 is about 7393.6587018877. The cubic root of 54666189 is about 379.5243101280.

The spelling of 54666189 in words is "fifty-four million, six hundred sixty-six thousand, one hundred eighty-nine".