255555321539 has 16 divisors (see below), whose sum is σ = 307634465280. Its totient is φ = 207383950080.

The previous prime is 255555321521. The next prime is 255555321569. The reversal of 255555321539 is 935123555552.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255555321539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255555321569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417422 + ... + 827859.

It is an arithmetic number, because the mean of its divisors is an integer number (19227154080).

Almost surely, 2^255555321539 is an apocalyptic number.

255555321539 is a deficient number, since it is larger than the sum of its proper divisors (52079143741).

255555321539 is a wasteful number, since it uses less digits than its factorization.

255555321539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246850.

The product of its digits is 5062500, while the sum is 50.

The spelling of 255555321539 in words is "two hundred fifty-five billion, five hundred fifty-five million, three hundred twenty-one thousand, five hundred thirty-nine".