5781749 has 2 divisors, whose sum is σ = 5781750. Its totient is φ = 5781748.

The previous prime is 5781733. The next prime is 5781791. The reversal of 5781749 is 9471875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5152900 + 628849 = 2270^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 5781749 - 2⁴ = 5781733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5781709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2890874 + 2890875.

It is an arithmetic number, because the mean of its divisors is an integer number (2890875).

Almost surely, 2^5781749 is an apocalyptic number.

It is an amenable number.

5781749 is a deficient number, since it is larger than the sum of its proper divisors (1).

5781749 is an equidigital number, since it uses as much as digits as its factorization.

5781749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 41.

The square root of 5781749 is about 2404.5267725688. The cubic root of 5781749 is about 179.4815223982.

The spelling of 5781749 in words is "five million, seven hundred eighty-one thousand, seven hundred forty-nine".