2172858287 has 2 divisors, whose sum is σ = 2172858288. Its totient is φ = 2172858286.

The previous prime is 2172858283. The next prime is 2172858319. The reversal of 2172858287 is 7828582712.

2172858287 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 2172858287 - 2² = 2172858283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172858283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086429143 + 1086429144.

It is an arithmetic number, because the mean of its divisors is an integer number (1086429144).

Almost surely, 2^2172858287 is an apocalyptic number.

2172858287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172858287 is an equidigital number, since it uses as much as digits as its factorization.

2172858287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1003520, while the sum is 50.

The square root of 2172858287 is about 46613.9280365858. The cubic root of 2172858287 is about 1295.2207724259.

The spelling of 2172858287 in words is "two billion, one hundred seventy-two million, eight hundred fifty-eight thousand, two hundred eighty-seven".