85555207 has 2 divisors, whose sum is σ = 85555208. Its totient is φ = 85555206.

The previous prime is 85555187. The next prime is 85555229. The reversal of 85555207 is 70255558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85555207 - 2¹⁹ = 85030919 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 (85555297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42777603 + 42777604.

It is an arithmetic number, because the mean of its divisors is an integer number (42777604).

Almost surely, 2^85555207 is an apocalyptic number.

85555207 is a deficient number, since it is larger than the sum of its proper divisors (1).

85555207 is an equidigital number, since it uses as much as digits as its factorization.

85555207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70000, while the sum is 37.

The square root of 85555207 is about 9249.6057753831. The cubic root of 85555207 is about 440.6382043693.

The spelling of 85555207 in words is "eighty-five million, five hundred fifty-five thousand, two hundred seven".