285233153 has 4 divisors (see below), whose sum is σ = 286241328. Its totient is φ = 284224980.

The previous prime is 285233129. The next prime is 285233167. The reversal of 285233153 is 351332582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 351332582 = 2 ⋅175666291.

It is a cyclic number.

It is not a de Polignac number, because 285233153 - 2¹² = 285229057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285233173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503663 + ... + 504228.

It is an arithmetic number, because the mean of its divisors is an integer number (71560332).

Almost surely, 2^285233153 is an apocalyptic number.

It is an amenable number.

285233153 is a deficient number, since it is larger than the sum of its proper divisors (1008175).

285233153 is a wasteful number, since it uses less digits than its factorization.

285233153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008174.

The product of its digits is 21600, while the sum is 32.

The square root of 285233153 is about 16888.8470003136. The cubic root of 285233153 is about 658.2638430026.

The spelling of 285233153 in words is "two hundred eighty-five million, two hundred thirty-three thousand, one hundred fifty-three".