5278621 has 2 divisors, whose sum is σ = 5278622. Its totient is φ = 5278620.

The previous prime is 5278607. The next prime is 5278657. The reversal of 5278621 is 1268725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3956121 + 1322500 = 1989^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 5278621 - 2¹⁹ = 4754333 is a prime.

It is a congruent number.

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, 2639310 + 2639311.

It is an arithmetic number, because the mean of its divisors is an integer number (2639311).

Almost surely, 2^5278621 is an apocalyptic number.

It is an amenable number.

5278621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278621 is an equidigital number, since it uses as much as digits as its factorization.

5278621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 5278621 is about 2297.5249726608. The cubic root of 5278621 is about 174.1165929272.

The spelling of 5278621 in words is "five million, two hundred seventy-eight thousand, six hundred twenty-one".