254739561 has 16 divisors (see below), whose sum is σ = 354049344. Its totient is φ = 162765504.

The previous prime is 254739553. The next prime is 254739607. The reversal of 254739561 is 165937452.

254739561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 254739561 - 2³ = 254739553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254739461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9690 + ... + 24563.

It is an arithmetic number, because the mean of its divisors is an integer number (22128084).

Almost surely, 2^254739561 is an apocalyptic number.

It is an amenable number.

254739561 is a deficient number, since it is larger than the sum of its proper divisors (99309783).

254739561 is a wasteful number, since it uses less digits than its factorization.

254739561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34360.

The product of its digits is 226800, while the sum is 42.

The square root of 254739561 is about 15960.5626780512. The cubic root of 254739561 is about 633.9166109181.

The spelling of 254739561 in words is "two hundred fifty-four million, seven hundred thirty-nine thousand, five hundred sixty-one".