54515518 has 4 divisors (see below), whose sum is σ = 81773280. Its totient is φ = 27257758.

The previous prime is 54515509. The next prime is 54515533. The reversal of 54515518 is 81551545.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13628878 + ... + 13628881.

It is an arithmetic number, because the mean of its divisors is an integer number (20443320).

Almost surely, 2^54515518 is an apocalyptic number.

54515518 is a deficient number, since it is larger than the sum of its proper divisors (27257762).

54515518 is a wasteful number, since it uses less digits than its factorization.

54515518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27257761.

The product of its digits is 20000, while the sum is 34.

The square root of 54515518 is about 7383.4624668918. The cubic root of 54515518 is about 379.1753075410.

The spelling of 54515518 in words is "fifty-four million, five hundred fifteen thousand, five hundred eighteen".