5390681 has 2 divisors, whose sum is σ = 5390682. Its totient is φ = 5390680.

The previous prime is 5390677. The next prime is 5390687. The reversal of 5390681 is 1860935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5382400 + 8281 = 2320^2 + 91^2 .

It is a cyclic number.

It is not a de Polignac number, because 5390681 - 2² = 5390677 is a prime.

It is a super-2 number, since 2×5390681² = 58118883287522, which contains 22 as substring.

It is a plaindrome in base 9.

It is not a weakly prime, because it can be changed into another prime (5390687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2695340 + 2695341.

It is an arithmetic number, because the mean of its divisors is an integer number (2695341).

Almost surely, 2^5390681 is an apocalyptic number.

It is an amenable number.

5390681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5390681 is an equidigital number, since it uses as much as digits as its factorization.

5390681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 5390681 is about 2321.7840123491. The cubic root of 5390681 is about 175.3400842513.

The spelling of 5390681 in words is "five million, three hundred ninety thousand, six hundred eighty-one".