255772553 has 4 divisors (see below), whose sum is σ = 256531860. Its totient is φ = 255013248.

The previous prime is 255772529. The next prime is 255772571. The reversal of 255772553 is 355277552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 134838544 + 120934009 = 11612^2 + 10997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255772553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 255772553.

It is not an unprimeable number, because it can be changed into a prime (255772513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379148 + ... + 379821.

It is an arithmetic number, because the mean of its divisors is an integer number (64132965).

Almost surely, 2^255772553 is an apocalyptic number.

It is an amenable number.

255772553 is a deficient number, since it is larger than the sum of its proper divisors (759307).

255772553 is an equidigital number, since it uses as much as digits as its factorization.

255772553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759306.

The product of its digits is 367500, while the sum is 41.

The square root of 255772553 is about 15992.8907018087. The cubic root of 255772553 is about 634.7723183985.

The spelling of 255772553 in words is "two hundred fifty-five million, seven hundred seventy-two thousand, five hundred fifty-three".