255421003 has 8 divisors (see below), whose sum is σ = 268627968. Its totient is φ = 242389224.

The previous prime is 255420967. The next prime is 255421031. The reversal of 255421003 is 300124552.

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 255421003 - 2²⁵ = 221866571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255421093) 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, 40801 + ... + 46642.

It is an arithmetic number, because the mean of its divisors is an integer number (33578496).

Almost surely, 2^255421003 is an apocalyptic number.

255421003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

255421003 is a deficient number, since it is larger than the sum of its proper divisors (13206965).

255421003 is a wasteful number, since it uses less digits than its factorization.

255421003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87593.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 255421003 is about 15981.8961015269. The cubic root of 255421003 is about 634.4813612921.

Adding to 255421003 its reverse (300124552), we get a palindrome (555545555).

The spelling of 255421003 in words is "two hundred fifty-five million, four hundred twenty-one thousand, three".