285214591 has 2 divisors, whose sum is σ = 285214592. Its totient is φ = 285214590.

The previous prime is 285214549. The next prime is 285214603. The reversal of 285214591 is 195412582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285214591 - 2⁹ = 285214079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285214591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285214091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142607295 + 142607296.

It is an arithmetic number, because the mean of its divisors is an integer number (142607296).

Almost surely, 2^285214591 is an apocalyptic number.

285214591 is a deficient number, since it is larger than the sum of its proper divisors (1).

285214591 is an equidigital number, since it uses as much as digits as its factorization.

285214591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 37.

The square root of 285214591 is about 16888.2974571151. The cubic root of 285214591 is about 658.2495635048.

The spelling of 285214591 in words is "two hundred eighty-five million, two hundred fourteen thousand, five hundred ninety-one".