255560505 has 16 divisors (see below), whose sum is σ = 409100544. Its totient is φ = 136231040.

The previous prime is 255560467. The next prime is 255560531. The reversal of 255560505 is 505065552.

It is not a de Polignac number, because 255560505 - 2¹⁶ = 255494969 is a prime.

It is a super-2 number, since 2×255560505² = 130622343431710050, which contains 22 as substring.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 46240 + ... + 51470.

It is an arithmetic number, because the mean of its divisors is an integer number (25568784).

Almost surely, 2^255560505 is an apocalyptic number.

It is an amenable number.

255560505 is a deficient number, since it is larger than the sum of its proper divisors (153540039).

255560505 is a wasteful number, since it uses less digits than its factorization.

255560505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8496.

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 255560505 is about 15986.2598815358. The cubic root of 255560505 is about 634.5968507634.

The spelling of 255560505 in words is "two hundred fifty-five million, five hundred sixty thousand, five hundred five".