285185207 has 2 divisors, whose sum is σ = 285185208. Its totient is φ = 285185206.

The previous prime is 285185191. The next prime is 285185221. The reversal of 285185207 is 702581582.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285185207 - 2⁴ = 285185191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285185287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142592603 + 142592604.

It is an arithmetic number, because the mean of its divisors is an integer number (142592604).

Almost surely, 2^285185207 is an apocalyptic number.

285185207 is a deficient number, since it is larger than the sum of its proper divisors (1).

285185207 is an equidigital number, since it uses as much as digits as its factorization.

285185207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 285185207 is about 16887.4274831900. The cubic root of 285185207 is about 658.2269575208.

The spelling of 285185207 in words is "two hundred eighty-five million, one hundred eighty-five thousand, two hundred seven".