255404433 has 8 divisors (see below), whose sum is σ = 340715200. Its totient is φ = 170181648.

The previous prime is 255404431. The next prime is 255404437. The reversal of 255404433 is 334404552.

255404433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255404433 - 2¹ = 255404431 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 255404433.

It is not an unprimeable number, because it can be changed into a prime (255404431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14893 + ... + 27066.

It is an arithmetic number, because the mean of its divisors is an integer number (42589400).

Almost surely, 2^255404433 is an apocalyptic number.

It is an amenable number.

255404433 is a deficient number, since it is larger than the sum of its proper divisors (85310767).

255404433 is a wasteful number, since it uses less digits than its factorization.

255404433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43991.

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 255404433 is about 15981.3776940538. The cubic root of 255404433 is about 634.4676406982.

Adding to 255404433 its reverse (334404552), we get a palindrome (589808985).

The spelling of 255404433 in words is "two hundred fifty-five million, four hundred four thousand, four hundred thirty-three".