5749721 has 4 divisors (see below), whose sum is σ = 5793744. Its totient is φ = 5705700.

The previous prime is 5749703. The next prime is 5749729. The reversal of 5749721 is 1279475.

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 5749721 - 2¹⁴ = 5733337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5749729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21815 + ... + 22076.

It is an arithmetic number, because the mean of its divisors is an integer number (1448436).

Almost surely, 2^5749721 is an apocalyptic number.

It is an amenable number.

5749721 is a deficient number, since it is larger than the sum of its proper divisors (44023).

5749721 is a wasteful number, since it uses less digits than its factorization.

5749721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44022.

The product of its digits is 17640, while the sum is 35.

The square root of 5749721 is about 2397.8575854291. The cubic root of 5749721 is about 179.1494959087.

The spelling of 5749721 in words is "five million, seven hundred forty-nine thousand, seven hundred twenty-one".