5749921 has 4 divisors (see below), whose sum is σ = 5844244. Its totient is φ = 5655600.

The previous prime is 5749907. The next prime is 5749943. The reversal of 5749921 is 1299475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2927521 + 2822400 = 1711^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 5749921 - 2⁹ = 5749409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5749901) 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, 47070 + ... + 47191.

It is an arithmetic number, because the mean of its divisors is an integer number (1461061).

Almost surely, 2^5749921 is an apocalyptic number.

It is an amenable number.

5749921 is a deficient number, since it is larger than the sum of its proper divisors (94323).

5749921 is an equidigital number, since it uses as much as digits as its factorization.

5749921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94322.

The product of its digits is 22680, while the sum is 37.

The square root of 5749921 is about 2397.8992889611. The cubic root of 5749921 is about 179.1515730810.

It can be divided in two parts, 5749 and 921, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 5749921 in words is "five million, seven hundred forty-nine thousand, nine hundred twenty-one".