54271721 has 8 divisors (see below), whose sum is σ = 62075520. Its totient is φ = 46480608.

The previous prime is 54271717. The next prime is 54271729. The reversal of 54271721 is 12717245.

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 54271721 - 2² = 54271717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54271729) 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, 9260 + ... + 13938.

It is an arithmetic number, because the mean of its divisors is an integer number (7759440).

Almost surely, 2^54271721 is an apocalyptic number.

It is an amenable number.

54271721 is a deficient number, since it is larger than the sum of its proper divisors (7803799).

54271721 is a wasteful number, since it uses less digits than its factorization.

54271721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343.

The product of its digits is 3920, while the sum is 29.

The square root of 54271721 is about 7366.9343013224. The cubic root of 54271721 is about 378.6092305096.

Adding to 54271721 its reverse (12717245), we get a palindrome (66988966).

The spelling of 54271721 in words is "fifty-four million, two hundred seventy-one thousand, seven hundred twenty-one".