254981569 has 4 divisors (see below), whose sum is σ = 259792596. Its totient is φ = 250170544.

The previous prime is 254981567. The next prime is 254981579. The reversal of 254981569 is 965189452.

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 156575169 + 98406400 = 12513^2 + 9920^2 .

It is a cyclic number.

It is not a de Polignac number, because 254981569 - 2¹ = 254981567 is a prime.

It is a super-3 number, since 3×254981569³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254981563) 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, 2405434 + ... + 2405539.

It is an arithmetic number, because the mean of its divisors is an integer number (64948149).

Almost surely, 2^254981569 is an apocalyptic number.

It is an amenable number.

254981569 is a deficient number, since it is larger than the sum of its proper divisors (4811027).

254981569 is an equidigital number, since it uses as much as digits as its factorization.

254981569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811026.

The product of its digits is 777600, while the sum is 49.

The square root of 254981569 is about 15968.1423152476. The cubic root of 254981569 is about 634.1172921346.

The spelling of 254981569 in words is "two hundred fifty-four million, nine hundred eighty-one thousand, five hundred sixty-nine".