5781091 has 2 divisors, whose sum is σ = 5781092. Its totient is φ = 5781090.

The previous prime is 5781077. The next prime is 5781101. The reversal of 5781091 is 1901875.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5781091 - 2⁵ = 5781059 is a prime.

It is a Chen prime.

5781091 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5781011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2890545 + 2890546.

It is an arithmetic number, because the mean of its divisors is an integer number (2890546).

Almost surely, 2^5781091 is an apocalyptic number.

5781091 is a deficient number, since it is larger than the sum of its proper divisors (1).

5781091 is an equidigital number, since it uses as much as digits as its factorization.

5781091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 5781091 is about 2404.3899434160. The cubic root of 5781091 is about 179.4747134250.

The spelling of 5781091 in words is "five million, seven hundred eighty-one thousand, ninety-one".