285901013 has 2 divisors, whose sum is σ = 285901014. Its totient is φ = 285901012.

The previous prime is 285901009. The next prime is 285901061. The reversal of 285901013 is 310109582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184334929 + 101566084 = 13577^2 + 10078^2 .

It is a cyclic number.

It is not a de Polignac number, because 285901013 - 2² = 285901009 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285901073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142950506 + 142950507.

It is an arithmetic number, because the mean of its divisors is an integer number (142950507).

Almost surely, 2^285901013 is an apocalyptic number.

It is an amenable number.

285901013 is a deficient number, since it is larger than the sum of its proper divisors (1).

285901013 is an equidigital number, since it uses as much as digits as its factorization.

285901013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 285901013 is about 16908.6076600056. The cubic root of 285901013 is about 658.7772071381. Note that the first 3 decimals are identical.

The spelling of 285901013 in words is "two hundred eighty-five million, nine hundred one thousand, thirteen".