254798509 has 16 divisors (see below), whose sum is σ = 294940800. Its totient is φ = 215607744.

The previous prime is 254798483. The next prime is 254798519. The reversal of 254798509 is 905897452.

It is a cyclic number.

It is not a de Polignac number, because 254798509 - 2⁷ = 254798381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254798519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319299 + ... + 320095.

It is an arithmetic number, because the mean of its divisors is an integer number (18433800).

Almost surely, 2^254798509 is an apocalyptic number.

It is an amenable number.

254798509 is a deficient number, since it is larger than the sum of its proper divisors (40142291).

254798509 is a wasteful number, since it uses less digits than its factorization.

254798509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 254798509 is about 15962.4092479801. The cubic root of 254798509 is about 633.9655042979.

The spelling of 254798509 in words is "two hundred fifty-four million, seven hundred ninety-eight thousand, five hundred nine".