2821512247 has 2 divisors, whose sum is σ = 2821512248. Its totient is φ = 2821512246.

The previous prime is 2821512181. The next prime is 2821512251. The reversal of 2821512247 is 7422151282.

2821512247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2821512247 - 2⁷ = 2821512119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2821515247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410756123 + 1410756124.

It is an arithmetic number, because the mean of its divisors is an integer number (1410756124).

Almost surely, 2^2821512247 is an apocalyptic number.

2821512247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821512247 is an equidigital number, since it uses as much as digits as its factorization.

2821512247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 34.

The square root of 2821512247 is about 53117.9089102724. The cubic root of 2821512247 is about 1413.0601422852.

The spelling of 2821512247 in words is "two billion, eight hundred twenty-one million, five hundred twelve thousand, two hundred forty-seven".