211457087 has 2 divisors, whose sum is σ = 211457088. Its totient is φ = 211457086.

The previous prime is 211457063. The next prime is 211457111. The reversal of 211457087 is 780754112.

It is a balanced prime because it is at equal distance from previous prime (211457063) and next prime (211457111).

It is a cyclic number.

It is not a de Polignac number, because 211457087 - 2⁸ = 211456831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211457017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105728543 + 105728544.

It is an arithmetic number, because the mean of its divisors is an integer number (105728544).

Almost surely, 2^211457087 is an apocalyptic number.

211457087 is a deficient number, since it is larger than the sum of its proper divisors (1).

211457087 is an equidigital number, since it uses as much as digits as its factorization.

211457087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 211457087 is about 14541.5641180720. The cubic root of 211457087 is about 595.7637599151.

The spelling of 211457087 in words is "two hundred eleven million, four hundred fifty-seven thousand, eighty-seven".