255575553 has 4 divisors (see below), whose sum is σ = 340767408. Its totient is φ = 170383700.

The previous prime is 255575533. The next prime is 255575561. The reversal of 255575553 is 355575552.

255575553 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 255575553 - 2⁹ = 255575041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255575533) 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, 42595923 + ... + 42595928.

It is an arithmetic number, because the mean of its divisors is an integer number (85191852).

Almost surely, 2^255575553 is an apocalyptic number.

It is an amenable number.

255575553 is a deficient number, since it is larger than the sum of its proper divisors (85191855).

255575553 is an equidigital number, since it uses as much as digits as its factorization.

255575553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85191854.

The product of its digits is 656250, while the sum is 42.

The square root of 255575553 is about 15986.7305287854. The cubic root of 255575553 is about 634.6093060343.

Subtracting 255575553 from its reverse (355575552), we obtain a palindrome (99999999).

The spelling of 255575553 in words is "two hundred fifty-five million, five hundred seventy-five thousand, five hundred fifty-three".