255356473 has 4 divisors (see below), whose sum is σ = 270377460. Its totient is φ = 240335488.

The previous prime is 255356471. The next prime is 255356509. The reversal of 255356473 is 374653552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80138304 + 175218169 = 8952^2 + 13237^2 .

It is a cyclic number.

It is not a de Polignac number, because 255356473 - 2¹ = 255356471 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255356471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7510468 + ... + 7510501.

It is an arithmetic number, because the mean of its divisors is an integer number (67594365).

Almost surely, 2^255356473 is an apocalyptic number.

It is an amenable number.

255356473 is a deficient number, since it is larger than the sum of its proper divisors (15020987).

255356473 is a wasteful number, since it uses less digits than its factorization.

255356473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15020986.

The product of its digits is 378000, while the sum is 40.

The square root of 255356473 is about 15979.8771271872. The cubic root of 255356473 is about 634.4279246388.

The spelling of 255356473 in words is "two hundred fifty-five million, three hundred fifty-six thousand, four hundred seventy-three".