54864515 has 4 divisors (see below), whose sum is σ = 65837424. Its totient is φ = 43891608.

The previous prime is 54864497. The next prime is 54864529. The reversal of 54864515 is 51546845.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54864515 - 2²⁰ = 53815939 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 5486447 + ... + 5486456.

It is an arithmetic number, because the mean of its divisors is an integer number (16459356).

Almost surely, 2^54864515 is an apocalyptic number.

54864515 is a deficient number, since it is larger than the sum of its proper divisors (10972909).

54864515 is a wasteful number, since it uses less digits than its factorization.

54864515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10972908.

The product of its digits is 96000, while the sum is 38.

The square root of 54864515 is about 7407.0584579845. The cubic root of 54864515 is about 379.9827208209.

It can be divided in two parts, 5486 and 4515, that added together give a palindrome (10001).

The spelling of 54864515 in words is "fifty-four million, eight hundred sixty-four thousand, five hundred fifteen".