1253171289 has 8 divisors (see below), whose sum is σ = 1674328000. Its totient is φ = 833731056.

The previous prime is 1253171281. The next prime is 1253171299. The reversal of 1253171289 is 9821713521.

It is a happy number.

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

It is not a de Polignac number, because 1253171289 - 2³ = 1253171281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253171281) 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, 427414 + ... + 430335.

It is an arithmetic number, because the mean of its divisors is an integer number (209291000).

Almost surely, 2^1253171289 is an apocalyptic number.

It is an amenable number.

1253171289 is a deficient number, since it is larger than the sum of its proper divisors (421156711).

1253171289 is an equidigital number, since it uses as much as digits as its factorization.

1253171289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858239.

The product of its digits is 30240, while the sum is 39.

The square root of 1253171289 is about 35400.1594487934. The cubic root of 1253171289 is about 1078.1275537112.

The spelling of 1253171289 in words is "one billion, two hundred fifty-three million, one hundred seventy-one thousand, two hundred eighty-nine".