255520323 has 12 divisors (see below), whose sum is σ = 378087528. Its totient is φ = 166191840.

The previous prime is 255520301. The next prime is 255520351. The reversal of 255520323 is 323025552.

It is not a de Polignac number, because 255520323 - 2¹² = 255516227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255520393) 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 11 ways as a sum of consecutive naturals, for example, 345865 + ... + 346602.

It is an arithmetic number, because the mean of its divisors is an integer number (31507294).

Almost surely, 2^255520323 is an apocalyptic number.

255520323 is a deficient number, since it is larger than the sum of its proper divisors (122567205).

255520323 is a wasteful number, since it uses less digits than its factorization.

255520323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692514 (or 692511 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 255520323 is about 15985.0030653735. The cubic root of 255520323 is about 634.5635896156.

Adding to 255520323 its reverse (323025552), we get a palindrome (578545875).

The spelling of 255520323 in words is "two hundred fifty-five million, five hundred twenty thousand, three hundred twenty-three".