54215911 has 8 divisors (see below), whose sum is σ = 57201920. Its totient is φ = 51243192.

The previous prime is 54215783. The next prime is 54215929. The reversal of 54215911 is 11951245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54215911 - 2⁷ = 54215783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54215911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54215971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5716 + ... + 11878.

It is an arithmetic number, because the mean of its divisors is an integer number (7150240).

Almost surely, 2^54215911 is an apocalyptic number.

54215911 is a deficient number, since it is larger than the sum of its proper divisors (2986009).

54215911 is a wasteful number, since it uses less digits than its factorization.

54215911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6645.

The product of its digits is 1800, while the sum is 28.

The square root of 54215911 is about 7363.1454555781. The cubic root of 54215911 is about 378.4794058179.

The spelling of 54215911 in words is "fifty-four million, two hundred fifteen thousand, nine hundred eleven".