255505443 has 4 divisors (see below), whose sum is σ = 340673928. Its totient is φ = 170336960.

The previous prime is 255505433. The next prime is 255505451. The reversal of 255505443 is 344505552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255505443 - 2¹⁸ = 255243299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255505403) 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, 42584238 + ... + 42584243.

It is an arithmetic number, because the mean of its divisors is an integer number (85168482).

Almost surely, 2^255505443 is an apocalyptic number.

255505443 is a deficient number, since it is larger than the sum of its proper divisors (85168485).

255505443 is an equidigital number, since it uses as much as digits as its factorization.

255505443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85168484.

The product of its (nonzero) digits is 60000, while the sum is 33.

The square root of 255505443 is about 15984.5376223399. The cubic root of 255505443 is about 634.5512716267.

The spelling of 255505443 in words is "two hundred fifty-five million, five hundred five thousand, four hundred forty-three".