85566203 has 2 divisors, whose sum is σ = 85566204. Its totient is φ = 85566202.

The previous prime is 85566193. The next prime is 85566209. The reversal of 85566203 is 30266558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85566203 - 2¹² = 85562107 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85566209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42783101 + 42783102.

It is an arithmetic number, because the mean of its divisors is an integer number (42783102).

Almost surely, 2^85566203 is an apocalyptic number.

85566203 is a deficient number, since it is larger than the sum of its proper divisors (1).

85566203 is an equidigital number, since it uses as much as digits as its factorization.

85566203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 85566203 is about 9250.2001599965. The cubic root of 85566203 is about 440.6570812649.

The spelling of 85566203 in words is "eighty-five million, five hundred sixty-six thousand, two hundred three".