5278169287 has 2 divisors, whose sum is σ = 5278169288. Its totient is φ = 5278169286.

The previous prime is 5278169261. The next prime is 5278169311. The reversal of 5278169287 is 7829618725.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5278169287 - 2⁷ = 5278169159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5278169257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639084643 + 2639084644.

It is an arithmetic number, because the mean of its divisors is an integer number (2639084644).

Almost surely, 2^5278169287 is an apocalyptic number.

5278169287 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278169287 is an equidigital number, since it uses as much as digits as its factorization.

5278169287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 55.

The square root of 5278169287 is about 72651.0102269748. The cubic root of 5278169287 is about 1741.1162616462.

The spelling of 5278169287 in words is "five billion, two hundred seventy-eight million, one hundred sixty-nine thousand, two hundred eighty-seven".