285071 has 2 divisors, whose sum is σ = 285072. Its totient is φ = 285070.

The previous prime is 285049. The next prime is 285079. The reversal of 285071 is 170582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285071 - 2⁶ = 285007 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285071.

It is not a weakly prime, because it can be changed into another prime (285079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142535 + 142536.

It is an arithmetic number, because the mean of its divisors is an integer number (142536).

2²⁸⁵⁰⁷¹ is an apocalyptic number.

285071 is a deficient number, since it is larger than the sum of its proper divisors (1).

285071 is an equidigital number, since it uses as much as digits as its factorization.

285071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 285071 is about 533.9204060532. The cubic root of 285071 is about 65.8139079934.

The spelling of 285071 in words is "two hundred eighty-five thousand, seventy-one".