5505721 has 8 divisors (see below), whose sum is σ = 6056064. Its totient is φ = 4973520.

The previous prime is 5505719. The next prime is 5505727. The reversal of 5505721 is 1275055.

It is a happy number.

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 5505721 - 2¹ = 5505719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5505727) 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, 3895 + ... + 5116.

It is an arithmetic number, because the mean of its divisors is an integer number (757008).

Almost surely, 2^5505721 is an apocalyptic number.

It is an amenable number.

5505721 is a deficient number, since it is larger than the sum of its proper divisors (550343).

5505721 is a wasteful number, since it uses less digits than its factorization.

5505721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9071.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 5505721 is about 2346.4272841919. The cubic root of 5505721 is about 176.5785989602.

It can be divided in two parts, 5505 and 721, that added together give a palindrome (6226).

The spelling of 5505721 in words is "five million, five hundred five thousand, seven hundred twenty-one".