5721855 has 16 divisors (see below), whose sum is σ = 9189600. Its totient is φ = 3040128.

The previous prime is 5721853. The next prime is 5721889. The reversal of 5721855 is 5581275.

It is a happy number.

It is not a de Polignac number, because 5721855 - 2¹ = 5721853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4689 + ... + 5781.

It is an arithmetic number, because the mean of its divisors is an integer number (574350).

Almost surely, 2^5721855 is an apocalyptic number.

5721855 is a deficient number, since it is larger than the sum of its proper divisors (3467745).

5721855 is a wasteful number, since it uses less digits than its factorization.

5721855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450.

The product of its digits is 14000, while the sum is 33.

The square root of 5721855 is about 2392.0399244160. The cubic root of 5721855 is about 178.8596113214.

It can be divided in two parts, 57 and 21855, that added together give a palindrome (21912).

The spelling of 5721855 in words is "five million, seven hundred twenty-one thousand, eight hundred fifty-five".