255531445 has 16 divisors (see below), whose sum is σ = 330794352. Its totient is φ = 188375040.

The previous prime is 255531443. The next prime is 255531461. The reversal of 255531445 is 544135552.

It can be written as a sum of positive squares in 8 ways, for example, as 18309841 + 237221604 = 4279^2 + 15402^2 .

It is not a de Polignac number, because 255531445 - 2¹ = 255531443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255531445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255531443) 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 15 ways as a sum of consecutive naturals, for example, 38599 + ... + 44731.

It is an arithmetic number, because the mean of its divisors is an integer number (20674647).

Almost surely, 2^255531445 is an apocalyptic number.

It is an amenable number.

255531445 is a deficient number, since it is larger than the sum of its proper divisors (75262907).

255531445 is a wasteful number, since it uses less digits than its factorization.

255531445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792.

The product of its digits is 60000, while the sum is 34.

The square root of 255531445 is about 15985.3509501668. The cubic root of 255531445 is about 634.5727963377.

Adding to 255531445 its reverse (544135552), we get a palindrome (799666997).

The spelling of 255531445 in words is "two hundred fifty-five million, five hundred thirty-one thousand, four hundred forty-five".