5278866157 has 2 divisors, whose sum is σ = 5278866158. Its totient is φ = 5278866156.

The previous prime is 5278866139. The next prime is 5278866161. The reversal of 5278866157 is 7516688725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3464617321 + 1814248836 = 58861^2 + 42594^2 .

It is a cyclic number.

It is not a de Polignac number, because 5278866157 - 2⁷ = 5278866029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5278866098 and 5278866107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5278866127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639433078 + 2639433079.

It is an arithmetic number, because the mean of its divisors is an integer number (2639433079).

Almost surely, 2^5278866157 is an apocalyptic number.

It is an amenable number.

5278866157 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278866157 is an equidigital number, since it uses as much as digits as its factorization.

5278866157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5644800, while the sum is 55.

The square root of 5278866157 is about 72655.8060790740. The cubic root of 5278866157 is about 1741.1928840651.

The spelling of 5278866157 in words is "five billion, two hundred seventy-eight million, eight hundred sixty-six thousand, one hundred fifty-seven".