285375533 has 2 divisors, whose sum is σ = 285375534. Its totient is φ = 285375532.

The previous prime is 285375529. The next prime is 285375589. The reversal of 285375533 is 335573582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284495689 + 879844 = 16867^2 + 938^2 .

It is a cyclic number.

It is not a de Polignac number, because 285375533 - 2² = 285375529 is a prime.

It is a super-3 number, since 3×285375533³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285375523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142687766 + 142687767.

It is an arithmetic number, because the mean of its divisors is an integer number (142687767).

Almost surely, 2^285375533 is an apocalyptic number.

It is an amenable number.

285375533 is a deficient number, since it is larger than the sum of its proper divisors (1).

285375533 is an equidigital number, since it uses as much as digits as its factorization.

285375533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 41.

The square root of 285375533 is about 16893.0616822410. The cubic root of 285375533 is about 658.3733534325.

The spelling of 285375533 in words is "two hundred eighty-five million, three hundred seventy-five thousand, five hundred thirty-three".