5755781 has 4 divisors (see below), whose sum is σ = 5797932. Its totient is φ = 5713632.

The previous prime is 5755753. The next prime is 5755787. The reversal of 5755781 is 1875575.

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 3865156 + 1890625 = 1966^2 + 1375^2 .

It is a cyclic number.

It is not a de Polignac number, because 5755781 - 2¹⁰ = 5754757 is a prime.

It is a super-2 number, since 2×5755781² = 66258029839922, 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 (5755787) 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, 20870 + ... + 21143.

It is an arithmetic number, because the mean of its divisors is an integer number (1449483).

Almost surely, 2^5755781 is an apocalyptic number.

It is an amenable number.

5755781 is a deficient number, since it is larger than the sum of its proper divisors (42151).

5755781 is a wasteful number, since it uses less digits than its factorization.

5755781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42150.

The product of its digits is 49000, while the sum is 38.

The square root of 5755781 is about 2399.1208806561. The cubic root of 5755781 is about 179.2124128605.

The spelling of 5755781 in words is "five million, seven hundred fifty-five thousand, seven hundred eighty-one".