274256563 has 16 divisors (see below), whose sum is σ = 333296640. Its totient is φ = 220300416.

The previous prime is 274256551. The next prime is 274256569. The reversal of 274256563 is 365652472.

It is not a de Polignac number, because 274256563 - 2²¹ = 272159411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274256569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23620 + ... + 33262.

It is an arithmetic number, because the mean of its divisors is an integer number (20831040).

Almost surely, 2^274256563 is an apocalyptic number.

274256563 is a deficient number, since it is larger than the sum of its proper divisors (59040077).

274256563 is a wasteful number, since it uses less digits than its factorization.

274256563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906.

The product of its digits is 302400, while the sum is 40.

The square root of 274256563 is about 16560.6933127813. The cubic root of 274256563 is about 649.7091898320.

The spelling of 274256563 in words is "two hundred seventy-four million, two hundred fifty-six thousand, five hundred sixty-three".