253109083421 has 8 divisors (see below), whose sum is σ = 268467211584. Its totient is φ = 237803106240.

The previous prime is 253109083397. The next prime is 253109083459. The reversal of 253109083421 is 124380901352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253109083421 is a prime.

It is a super-2 number, since 2×253109083421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253109083021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13027745 + ... + 13047158.

It is an arithmetic number, because the mean of its divisors is an integer number (33558401448).

Almost surely, 2^253109083421 is an apocalyptic number.

It is an amenable number.

253109083421 is a deficient number, since it is larger than the sum of its proper divisors (15358128163).

253109083421 is a wasteful number, since it uses less digits than its factorization.

253109083421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26075491.

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 253109083421 its reverse (124380901352), we get a palindrome (377489984773).

The spelling of 253109083421 in words is "two hundred fifty-three billion, one hundred nine million, eighty-three thousand, four hundred twenty-one".