255540550 has 12 divisors (see below), whose sum is σ = 475305516. Its totient is φ = 102216200.

The previous prime is 255540499. The next prime is 255540569. The reversal of 255540550 is 55045552.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2555356 + ... + 2555455.

It is an arithmetic number, because the mean of its divisors is an integer number (39608793).

Almost surely, 2^255540550 is an apocalyptic number.

255540550 is a deficient number, since it is larger than the sum of its proper divisors (219764966).

255540550 is a wasteful number, since it uses less digits than its factorization.

255540550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110823 (or 5110818 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 31.

The square root of 255540550 is about 15985.6357396257. The cubic root of 255540550 is about 634.5803332010.

The spelling of 255540550 in words is "two hundred fifty-five million, five hundred forty thousand, five hundred fifty".