5055721 has 4 divisors (see below), whose sum is σ = 5515344. Its totient is φ = 4596100.

The previous prime is 5055709. The next prime is 5055781. The reversal of 5055721 is 1275505.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5055721 - 2⁷ = 5055593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5055781) by changing a digit.

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, 229795 + ... + 229816.

It is an arithmetic number, because the mean of its divisors is an integer number (1378836).

Almost surely, 2^5055721 is an apocalyptic number.

It is an amenable number.

5055721 is a deficient number, since it is larger than the sum of its proper divisors (459623).

5055721 is a wasteful number, since it uses less digits than its factorization.

5055721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459622.

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

The square root of 5055721 is about 2248.4930509121. The cubic root of 5055721 is about 171.6304599964.

It can be divided in two parts, 5055 and 721, that added together give a square (5776 = 76²).

The spelling of 5055721 in words is "five million, fifty-five thousand, seven hundred twenty-one".