54871566 has 16 divisors (see below), whose sum is σ = 109983744. Its totient is φ = 18250424.

The previous prime is 54871561. The next prime is 54871573. The reversal of 54871566 is 66517845.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54871561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6990 + ... + 12593.

It is an arithmetic number, because the mean of its divisors is an integer number (6873984).

Almost surely, 2^54871566 is an apocalyptic number.

54871566 is an abundant number, since it is smaller than the sum of its proper divisors (55112178).

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

54871566 is a wasteful number, since it uses less digits than its factorization.

54871566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20055.

The product of its digits is 201600, while the sum is 42.

The square root of 54871566 is about 7407.5344076150. The cubic root of 54871566 is about 379.9989981506.

The spelling of 54871566 in words is "fifty-four million, eight hundred seventy-one thousand, five hundred sixty-six".