255286947 has 4 divisors (see below), whose sum is σ = 340382600. Its totient is φ = 170191296.

The previous prime is 255286921. The next prime is 255286949. The reversal of 255286947 is 749682552.

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

It is not a de Polignac number, because 255286947 - 2²³ = 246898339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255286896 and 255286905.

It is not an unprimeable number, because it can be changed into a prime (255286949) 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, 42547822 + ... + 42547827.

It is an arithmetic number, because the mean of its divisors is an integer number (85095650).

Almost surely, 2^255286947 is an apocalyptic number.

255286947 is a deficient number, since it is larger than the sum of its proper divisors (85095653).

255286947 is an equidigital number, since it uses as much as digits as its factorization.

255286947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85095652.

The product of its digits is 1209600, while the sum is 48.

The square root of 255286947 is about 15977.7015556055. The cubic root of 255286947 is about 634.3703407716.

The spelling of 255286947 in words is "two hundred fifty-five million, two hundred eighty-six thousand, nine hundred forty-seven".