5721655 has 8 divisors (see below), whose sum is σ = 6883200. Its totient is φ = 4565856.

The previous prime is 5721649. The next prime is 5721659. The reversal of 5721655 is 5561275.

5721655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5721655 - 2¹¹ = 5719607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721659) 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, 1201 + ... + 3589.

It is an arithmetic number, because the mean of its divisors is an integer number (860400).

Almost surely, 2^5721655 is an apocalyptic number.

5721655 is a deficient number, since it is larger than the sum of its proper divisors (1161545).

5721655 is a wasteful number, since it uses less digits than its factorization.

5721655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its digits is 10500, while the sum is 31.

The square root of 5721655 is about 2391.9981187284. The cubic root of 5721655 is about 178.8575273621.

It can be divided in two parts, 57 and 21655, that added together give a palindrome (21712).

The spelling of 5721655 in words is "five million, seven hundred twenty-one thousand, six hundred fifty-five".