215000873 has 2 divisors, whose sum is σ = 215000874. Its totient is φ = 215000872.

The previous prime is 215000837. The next prime is 215000879. The reversal of 215000873 is 378000512.

Together with previous prime (215000837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121066009 + 93934864 = 11003^2 + 9692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215000873 is a prime.

It is not a weakly prime, because it can be changed into another prime (215000879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107500436 + 107500437.

It is an arithmetic number, because the mean of its divisors is an integer number (107500437).

Almost surely, 2^215000873 is an apocalyptic number.

It is an amenable number.

215000873 is a deficient number, since it is larger than the sum of its proper divisors (1).

215000873 is an equidigital number, since it uses as much as digits as its factorization.

215000873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 215000873 is about 14662.9080676379. The cubic root of 215000873 is about 599.0734523263.

The spelling of 215000873 in words is "two hundred fifteen million, eight hundred seventy-three", and thus it is an aban number.