253861289 has 8 divisors (see below), whose sum is σ = 293230368. Its totient is φ = 217207360.

The previous prime is 253861277. The next prime is 253861291. The reversal of 253861289 is 982168352.

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 253861289 - 2¹² = 253857193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253861219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678587 + ... + 678960.

It is an arithmetic number, because the mean of its divisors is an integer number (36653796).

Almost surely, 2^253861289 is an apocalyptic number.

It is an amenable number.

253861289 is a deficient number, since it is larger than the sum of its proper divisors (39369079).

253861289 is a wasteful number, since it uses less digits than its factorization.

253861289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357575.

The product of its digits is 207360, while the sum is 44.

The square root of 253861289 is about 15933.0251051079. The cubic root of 253861289 is about 633.1872486397.

The spelling of 253861289 in words is "two hundred fifty-three million, eight hundred sixty-one thousand, two hundred eighty-nine".