285485153 has 2 divisors, whose sum is σ = 285485154. Its totient is φ = 285485152.

The previous prime is 285485149. The next prime is 285485219. The reversal of 285485153 is 351584582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235683904 + 49801249 = 15352^2 + 7057^2 .

It is a cyclic number.

It is not a de Polignac number, because 285485153 - 2² = 285485149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285485153.

It is not a weakly prime, because it can be changed into another prime (285485113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142742576 + 142742577.

It is an arithmetic number, because the mean of its divisors is an integer number (142742577).

Almost surely, 2^285485153 is an apocalyptic number.

It is an amenable number.

285485153 is a deficient number, since it is larger than the sum of its proper divisors (1).

285485153 is an equidigital number, since it uses as much as digits as its factorization.

285485153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192000, while the sum is 41.

The square root of 285485153 is about 16896.3058980358. The cubic root of 285485153 is about 658.4576419573.

The spelling of 285485153 in words is "two hundred eighty-five million, four hundred eighty-five thousand, one hundred fifty-three".