255570478 has 8 divisors (see below), whose sum is σ = 385572168. Its totient is φ = 127046424.

The previous prime is 255570473. The next prime is 255570481. The reversal of 255570478 is 874075552.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255570473) 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, 368976 + ... + 369667.

It is an arithmetic number, because the mean of its divisors is an integer number (48196521).

Almost surely, 2^255570478 is an apocalyptic number.

255570478 is a deficient number, since it is larger than the sum of its proper divisors (130001690).

255570478 is a wasteful number, since it uses less digits than its factorization.

255570478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738818.

The product of its (nonzero) digits is 392000, while the sum is 43.

The square root of 255570478 is about 15986.5718026098. The cubic root of 255570478 is about 634.6051054975.

The spelling of 255570478 in words is "two hundred fifty-five million, five hundred seventy thousand, four hundred seventy-eight".