821250083 has 2 divisors, whose sum is σ = 821250084. Its totient is φ = 821250082.

The previous prime is 821250013. The next prime is 821250097. The reversal of 821250083 is 380052128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 821250083 - 2⁸ = 821249827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (821250013) 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, 410625041 + 410625042.

It is an arithmetic number, because the mean of its divisors is an integer number (410625042).

Almost surely, 2^821250083 is an apocalyptic number.

821250083 is a deficient number, since it is larger than the sum of its proper divisors (1).

821250083 is an equidigital number, since it uses as much as digits as its factorization.

821250083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 821250083 is about 28657.4612099537. The cubic root of 821250083 is about 936.4655571549.

The spelling of 821250083 in words is "eight hundred twenty-one million, two hundred fifty thousand, eighty-three".