255506539 has 4 divisors (see below), whose sum is σ = 255539880. Its totient is φ = 255473200.

The previous prime is 255506527. The next prime is 255506551. The reversal of 255506539 is 935605552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (255506527) and next prime (255506551).

It is a cyclic number.

It is not a de Polignac number, because 255506539 - 2⁷ = 255506411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255506519) 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, 1239 + ... + 22639.

It is an arithmetic number, because the mean of its divisors is an integer number (63884970).

Almost surely, 2^255506539 is an apocalyptic number.

255506539 is a deficient number, since it is larger than the sum of its proper divisors (33341).

255506539 is a wasteful number, since it uses less digits than its factorization.

255506539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33340.

The product of its (nonzero) digits is 202500, while the sum is 40.

The square root of 255506539 is about 15984.5719054343. The cubic root of 255506539 is about 634.5521789357.

The spelling of 255506539 in words is "two hundred fifty-five million, five hundred six thousand, five hundred thirty-nine".