254168009 has 4 divisors (see below), whose sum is σ = 265218816. Its totient is φ = 243117204.

The previous prime is 254167961. The next prime is 254168023. The reversal of 254168009 is 900861452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254168009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 254168009.

It is not an unprimeable number, because it can be changed into a prime (254168609) 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, 5525369 + ... + 5525414.

It is an arithmetic number, because the mean of its divisors is an integer number (66304704).

Almost surely, 2^254168009 is an apocalyptic number.

It is an amenable number.

254168009 is a deficient number, since it is larger than the sum of its proper divisors (11050807).

254168009 is a wasteful number, since it uses less digits than its factorization.

254168009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050806.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 254168009 is about 15942.6474903010. The cubic root of 254168009 is about 633.4421556004.

The spelling of 254168009 in words is "two hundred fifty-four million, one hundred sixty-eight thousand, nine".