5278657 has 2 divisors, whose sum is σ = 5278658. Its totient is φ = 5278656.

The previous prime is 5278621. The next prime is 5278681. The reversal of 5278657 is 7568725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5216656 + 62001 = 2284^2 + 249^2 .

It is a cyclic number.

It is not a de Polignac number, because 5278657 - 2⁷ = 5278529 is a prime.

It is a super-3 number, since 3×5278657³ (a number of 21 digits) contains 333 as substring.

It is a Chen prime.

5278657 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5278607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639328 + 2639329.

It is an arithmetic number, because the mean of its divisors is an integer number (2639329).

Almost surely, 2^5278657 is an apocalyptic number.

It is an amenable number.

5278657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278657 is an equidigital number, since it uses as much as digits as its factorization.

5278657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 40.

The square root of 5278657 is about 2297.5328071651. The cubic root of 5278657 is about 174.1169887492.

The spelling of 5278657 in words is "five million, two hundred seventy-eight thousand, six hundred fifty-seven".