2857215247 has 2 divisors, whose sum is σ = 2857215248. Its totient is φ = 2857215246.

The previous prime is 2857215241. The next prime is 2857215289. The reversal of 2857215247 is 7425127582.

2857215247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2857215247 - 2¹⁵ = 2857182479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857215241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428607623 + 1428607624.

It is an arithmetic number, because the mean of its divisors is an integer number (1428607624).

Almost surely, 2^2857215247 is an apocalyptic number.

2857215247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857215247 is an equidigital number, since it uses as much as digits as its factorization.

2857215247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313600, while the sum is 43.

The square root of 2857215247 is about 53452.9255233051. The cubic root of 2857215247 is about 1418.9953958699.

The spelling of 2857215247 in words is "two billion, eight hundred fifty-seven million, two hundred fifteen thousand, two hundred forty-seven".