5736821 has 4 divisors (see below), whose sum is σ = 5986272. Its totient is φ = 5487372.

The previous prime is 5736793. The next prime is 5736823. The reversal of 5736821 is 1286375.

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 5736821 - 2¹⁰ = 5735797 is a prime.

It is a super-2 number, since 2×5736821² = 65822230372082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5736823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124691 + ... + 124736.

It is an arithmetic number, because the mean of its divisors is an integer number (1496568).

Almost surely, 2^5736821 is an apocalyptic number.

It is an amenable number.

5736821 is a deficient number, since it is larger than the sum of its proper divisors (249451).

5736821 is a wasteful number, since it uses less digits than its factorization.

5736821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249450.

The product of its digits is 10080, while the sum is 32.

The square root of 5736821 is about 2395.1661737758. The cubic root of 5736821 is about 179.0154164182.

The spelling of 5736821 in words is "five million, seven hundred thirty-six thousand, eight hundred twenty-one".