84225857 has 2 divisors, whose sum is σ = 84225858. Its totient is φ = 84225856.

The previous prime is 84225797. The next prime is 84225877. The reversal of 84225857 is 75852248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51036736 + 33189121 = 7144^2 + 5761^2 .

It is a cyclic number.

It is not a de Polignac number, because 84225857 - 2⁸ = 84225601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84225877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42112928 + 42112929.

It is an arithmetic number, because the mean of its divisors is an integer number (42112929).

Almost surely, 2^84225857 is an apocalyptic number.

It is an amenable number.

84225857 is a deficient number, since it is larger than the sum of its proper divisors (1).

84225857 is an equidigital number, since it uses as much as digits as its factorization.

84225857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 179200, while the sum is 41.

The square root of 84225857 is about 9177.4646280985. The cubic root of 84225857 is about 438.3440805948.

The spelling of 84225857 in words is "eighty-four million, two hundred twenty-five thousand, eight hundred fifty-seven".