54565518 has 48 divisors (see below), whose sum is σ = 131065344. Its totient is φ = 15084720.

The previous prime is 54565517. The next prime is 54565541. The reversal of 54565518 is 81556545.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54565517) 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 23 ways as a sum of consecutive naturals, for example, 6121 + ... + 12107.

It is an arithmetic number, because the mean of its divisors is an integer number (2730528).

Almost surely, 2^54565518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54565518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65532672).

54565518 is an abundant number, since it is smaller than the sum of its proper divisors (76499826).

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

54565518 is a wasteful number, since it uses less digits than its factorization.

54565518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037 (or 6030 counting only the distinct ones).

The product of its digits is 120000, while the sum is 39.

The square root of 54565518 is about 7386.8476361707. The cubic root of 54565518 is about 379.2911948632.

The spelling of 54565518 in words is "fifty-four million, five hundred sixty-five thousand, five hundred eighteen".