6547917157 has 2 divisors, whose sum is σ = 6547917158. Its totient is φ = 6547917156.

The previous prime is 6547917151. The next prime is 6547917223. The reversal of 6547917157 is 7517197456.

6547917157 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6234839521 + 313077636 = 78961^2 + 17694^2 .

It is a cyclic number.

It is not a de Polignac number, because 6547917157 - 2¹⁵ = 6547884389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6547917151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273958578 + 3273958579.

It is an arithmetic number, because the mean of its divisors is an integer number (3273958579).

Almost surely, 2^6547917157 is an apocalyptic number.

It is an amenable number.

6547917157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6547917157 is an equidigital number, since it uses as much as digits as its factorization.

6547917157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1852200, while the sum is 52.

The square root of 6547917157 is about 80919.2014110372. The cubic root of 6547917157 is about 1870.8302867328.

The spelling of 6547917157 in words is "six billion, five hundred forty-seven million, nine hundred seventeen thousand, one hundred fifty-seven".