5278254639 has 16 divisors (see below), whose sum is σ = 8516176128. Its totient is φ = 2838724992.

The previous prime is 5278254623. The next prime is 5278254661. The reversal of 5278254639 is 9364528725.

It is a happy number.

It is not a de Polignac number, because 5278254639 - 2⁴ = 5278254623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 5278254591 and 5278254600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278258639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7392157 + ... + 7392870.

It is an arithmetic number, because the mean of its divisors is an integer number (532261008).

Almost surely, 2^5278254639 is an apocalyptic number.

5278254639 is a deficient number, since it is larger than the sum of its proper divisors (3237921489).

5278254639 is a wasteful number, since it uses less digits than its factorization.

5278254639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14785054.

The product of its digits is 3628800, while the sum is 51.

The square root of 5278254639 is about 72651.5976355648. The cubic root of 5278254639 is about 1741.1256466524.

The spelling of 5278254639 in words is "five billion, two hundred seventy-eight million, two hundred fifty-four thousand, six hundred thirty-nine".