255555447 has 8 divisors (see below), whose sum is σ = 389417856. Its totient is φ = 146031672.

The previous prime is 255555397. The next prime is 255555451. The reversal of 255555447 is 744555552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255555447 - 2⁶ = 255555383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255555399 and 255555408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255555457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6084633 + ... + 6084674.

It is an arithmetic number, because the mean of its divisors is an integer number (48677232).

Almost surely, 2^255555447 is an apocalyptic number.

255555447 is a deficient number, since it is larger than the sum of its proper divisors (133862409).

255555447 is a wasteful number, since it uses less digits than its factorization.

255555447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12169317.

The product of its digits is 700000, while the sum is 42.

The square root of 255555447 is about 15986.1016823990. The cubic root of 255555447 is about 634.5926641331.

The spelling of 255555447 in words is "two hundred fifty-five million, five hundred fifty-five thousand, four hundred forty-seven".