255433421 has 8 divisors (see below), whose sum is σ = 264794400. Its totient is φ = 246109360.

The previous prime is 255433417. The next prime is 255433429. The reversal of 255433421 is 124334552.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 255433421 - 2² = 255433417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255433429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5270 + ... + 23208.

It is an arithmetic number, because the mean of its divisors is an integer number (33099300).

Almost surely, 2^255433421 is an apocalyptic number.

It is an amenable number.

255433421 is a deficient number, since it is larger than the sum of its proper divisors (9360979).

255433421 is a wasteful number, since it uses less digits than its factorization.

255433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18459.

The product of its digits is 14400, while the sum is 29.

The square root of 255433421 is about 15982.2845988926. The cubic root of 255433421 is about 634.4916434821.

Adding to 255433421 its reverse (124334552), we get a palindrome (379767973).

The spelling of 255433421 in words is "two hundred fifty-five million, four hundred thirty-three thousand, four hundred twenty-one".