255576121 has 4 divisors (see below), whose sum is σ = 263820544. Its totient is φ = 247331700.

The previous prime is 255576119. The next prime is 255576149. The reversal of 255576121 is 121675552.

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.

It is a cyclic number.

It is not a de Polignac number, because 255576121 - 2¹ = 255576119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255576151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4122165 + ... + 4122226.

It is an arithmetic number, because the mean of its divisors is an integer number (65955136).

Almost surely, 2^255576121 is an apocalyptic number.

It is an amenable number.

255576121 is a deficient number, since it is larger than the sum of its proper divisors (8244423).

255576121 is an equidigital number, since it uses as much as digits as its factorization.

255576121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8244422.

The product of its digits is 21000, while the sum is 34.

The square root of 255576121 is about 15986.7482935086. The cubic root of 255576121 is about 634.6097761599.

The spelling of 255576121 in words is "two hundred fifty-five million, five hundred seventy-six thousand, one hundred twenty-one".