5278681 has 2 divisors, whose sum is σ = 5278682. Its totient is φ = 5278680.

The previous prime is 5278657. The next prime is 5278697. The reversal of 5278681 is 1868725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3549456 + 1729225 = 1884^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 5278681 - 2¹⁷ = 5147609 is a prime.

It is a super-2 number, since 2×5278681² = 55728946199522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5278681.

It is not a weakly prime, because it can be changed into another prime (5278601) 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, 2639340 + 2639341.

It is an arithmetic number, because the mean of its divisors is an integer number (2639341).

Almost surely, 2^5278681 is an apocalyptic number.

It is an amenable number.

5278681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278681 is an equidigital number, since it uses as much as digits as its factorization.

5278681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 5278681 is about 2297.5380301531. The cubic root of 5278681 is about 174.1172526296.

The spelling of 5278681 in words is "five million, two hundred seventy-eight thousand, six hundred eighty-one".