255076921 has 4 divisors (see below), whose sum is σ = 278265744. Its totient is φ = 231888100.

The previous prime is 255076879. The next prime is 255076951. The reversal of 255076921 is 129670552.

255076921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 255076921 - 2¹³ = 255068729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255076951) 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, 11594395 + ... + 11594416.

It is an arithmetic number, because the mean of its divisors is an integer number (69566436).

Almost surely, 2^255076921 is an apocalyptic number.

It is an amenable number.

255076921 is a deficient number, since it is larger than the sum of its proper divisors (23188823).

255076921 is a wasteful number, since it uses less digits than its factorization.

255076921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23188822.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 255076921 is about 15971.1277310026. The cubic root of 255076921 is about 634.1963263655.

The spelling of 255076921 in words is "two hundred fifty-five million, seventy-six thousand, nine hundred twenty-one".