255204121 has 6 divisors (see below), whose sum is σ = 263703066. Its totient is φ = 246970800.

The previous prime is 255204107. The next prime is 255204127. The reversal of 255204121 is 121402552.

It can be written as a sum of positive squares in only one way, i.e., 168714121 + 86490000 = 12989^2 + 9300^2 .

It is not a de Polignac number, because 255204121 - 2¹³ = 255195929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255204092 and 255204101.

It is not an unprimeable number, because it can be changed into a prime (255204127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131820 + ... + 133741.

It is an arithmetic number, because the mean of its divisors is an integer number (43950511).

Almost surely, 2^255204121 is an apocalyptic number.

It is an amenable number.

255204121 is a deficient number, since it is larger than the sum of its proper divisors (8498945).

255204121 is an equidigital number, since it uses as much as digits as its factorization.

255204121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265623 (or 265592 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 255204121 is about 15975.1094205955. The cubic root of 255204121 is about 634.3017277307.

Adding to 255204121 its reverse (121402552), we get a palindrome (376606673).

The spelling of 255204121 in words is "two hundred fifty-five million, two hundred four thousand, one hundred twenty-one".