5382781 has 2 divisors, whose sum is σ = 5382782. Its totient is φ = 5382780.

The previous prime is 5382779. The next prime is 5382787. The reversal of 5382781 is 1872835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4687225 + 695556 = 2165^2 + 834^2 .

It is a cyclic number.

It is not a de Polignac number, because 5382781 - 2¹ = 5382779 is a prime.

It is a super-2 number, since 2×5382781² = 57948662587922, which contains 22 as substring.

Together with 5382779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5382787) 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, 2691390 + 2691391.

It is an arithmetic number, because the mean of its divisors is an integer number (2691391).

Almost surely, 2^5382781 is an apocalyptic number.

5382781 is the 1340-th hex number.

It is an amenable number.

5382781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5382781 is an equidigital number, since it uses as much as digits as its factorization.

5382781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 5382781 is about 2320.0821106159. The cubic root of 5382781 is about 175.2543892109.

The spelling of 5382781 in words is "five million, three hundred eighty-two thousand, seven hundred eighty-one".