54571686 has 64 divisors (see below), whose sum is σ = 129185280. Its totient is φ = 15206400.

The previous prime is 54571679. The next prime is 54571703. The reversal of 54571686 is 68617545.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 33286 + ... + 34886.

It is an arithmetic number, because the mean of its divisors is an integer number (2018520).

Almost surely, 2^54571686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54571686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64592640).

54571686 is an abundant number, since it is smaller than the sum of its proper divisors (74613594).

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

54571686 is a wasteful number, since it uses less digits than its factorization.

54571686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661.

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

The square root of 54571686 is about 7387.2651231697. The cubic root of 54571686 is about 379.3054858173.

The spelling of 54571686 in words is "fifty-four million, five hundred seventy-one thousand, six hundred eighty-six".