285651097 has 2 divisors, whose sum is σ = 285651098. Its totient is φ = 285651096.

The previous prime is 285651089. The next prime is 285651139. The reversal of 285651097 is 790156582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260209161 + 25441936 = 16131^2 + 5044^2 .

It is a cyclic number.

It is not a de Polignac number, because 285651097 - 2³ = 285651089 is a prime.

It is not a weakly prime, because it can be changed into another prime (285651497) 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, 142825548 + 142825549.

It is an arithmetic number, because the mean of its divisors is an integer number (142825549).

Almost surely, 2^285651097 is an apocalyptic number.

It is an amenable number.

285651097 is a deficient number, since it is larger than the sum of its proper divisors (1).

285651097 is an equidigital number, since it uses as much as digits as its factorization.

285651097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 285651097 is about 16901.2158438380. The cubic root of 285651097 is about 658.5851978382.

The spelling of 285651097 in words is "two hundred eighty-five million, six hundred fifty-one thousand, ninety-seven".