54709221 has 8 divisors (see below), whose sum is σ = 83366464. Its totient is φ = 31262400.

The previous prime is 54709217. The next prime is 54709243. The reversal of 54709221 is 12290745.

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

It is not a de Polignac number, because 54709221 - 2² = 54709217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54709271) 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, 1302580 + ... + 1302621.

It is an arithmetic number, because the mean of its divisors is an integer number (10420808).

Almost surely, 2^54709221 is an apocalyptic number.

It is an amenable number.

54709221 is a deficient number, since it is larger than the sum of its proper divisors (28657243).

54709221 is a wasteful number, since it uses less digits than its factorization.

54709221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605211.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 54709221 is about 7396.5681907220. The cubic root of 54709221 is about 379.6238683557.

Adding to 54709221 its reverse (12290745), we get a palindrome (66999966).

The spelling of 54709221 in words is "fifty-four million, seven hundred nine thousand, two hundred twenty-one".