5278458409 has 27 divisors (see below), whose sum is σ = 6262726743. Its totient is φ = 4435901568.

The previous prime is 5278458379. The next prime is 5278458413. The reversal of 5278458409 is 9048548725.

The square root of 5278458409 is 72653.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2370229225 + 2908229184 = 48685^2 + 53928^2 .

It is not a de Polignac number, because 5278458409 - 2⁹ = 5278457897 is a prime.

It is a super-2 number, since 2×5278458409² = 55724246351085622562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5278458109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49331334 + ... + 49331440.

Almost surely, 2^5278458409 is an apocalyptic number.

5278458409 is the 72653-rd square number.

5278458409 is the 36327-th centered octagonal number.

It is an amenable number.

5278458409 is a deficient number, since it is larger than the sum of its proper divisors (984268334).

5278458409 is an frugal number, since it uses more digits than its factorization.

5278458409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The cubic root of 5278458409 is about 1741.1480520769.

The spelling of 5278458409 in words is "five billion, two hundred seventy-eight million, four hundred fifty-eight thousand, four hundred nine".