54216518 has 4 divisors (see below), whose sum is σ = 81324780. Its totient is φ = 27108258.

The previous prime is 54216511. The next prime is 54216529. The reversal of 54216518 is 81561245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81561245 = 5 ⋅16312249.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54216511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13554128 + ... + 13554131.

It is an arithmetic number, because the mean of its divisors is an integer number (20331195).

Almost surely, 2^54216518 is an apocalyptic number.

54216518 is a deficient number, since it is larger than the sum of its proper divisors (27108262).

54216518 is a wasteful number, since it uses less digits than its factorization.

54216518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27108261.

The product of its digits is 9600, while the sum is 32.

The square root of 54216518 is about 7363.1866742600. The cubic root of 54216518 is about 378.4808182947.

The spelling of 54216518 in words is "fifty-four million, two hundred sixteen thousand, five hundred eighteen".