54513666 has 12 divisors (see below), whose sum is σ = 118112982. Its totient is φ = 18171216.

The previous prime is 54513661. The next prime is 54513671. The reversal of 54513666 is 66631545.

It is an interprime number because it is at equal distance from previous prime (54513661) and next prime (54513671).

It can be written as a sum of positive squares in only one way, i.e., 51538041 + 2975625 = 7179^2 + 1725^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54513666.

It is not an unprimeable number, because it can be changed into a prime (54513661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1514251 + ... + 1514286.

Almost surely, 2^54513666 is an apocalyptic number.

54513666 is an abundant number, since it is smaller than the sum of its proper divisors (63599316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54513666 is a wasteful number, since it uses less digits than its factorization.

54513666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028545 (or 3028542 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 54513666 is about 7383.3370504129. The cubic root of 54513666 is about 379.1710137139.

The spelling of 54513666 in words is "fifty-four million, five hundred thirteen thousand, six hundred sixty-six".