253878609 has 8 divisors (see below), whose sum is σ = 338778720. Its totient is φ = 169115456.

The previous prime is 253878403. The next prime is 253878617. The reversal of 253878609 is 906878352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253878609 - 2⁸ = 253878353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253878619) 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 7 ways as a sum of consecutive naturals, for example, 29832 + ... + 37385.

It is an arithmetic number, because the mean of its divisors is an integer number (42347340).

Almost surely, 2^253878609 is an apocalyptic number.

It is an amenable number.

253878609 is a deficient number, since it is larger than the sum of its proper divisors (84900111).

253878609 is a wasteful number, since it uses less digits than its factorization.

253878609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68479.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 253878609 is about 15933.5686209964. The cubic root of 253878609 is about 633.2016483063.

The spelling of 253878609 in words is "two hundred fifty-three million, eight hundred seventy-eight thousand, six hundred nine".