253113121 has 4 divisors (see below), whose sum is σ = 253616832. Its totient is φ = 252609412.

The previous prime is 253113103. The next prime is 253113143. The reversal of 253113121 is 121311352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253113121 - 2⁵ = 253113089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253113191) 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 3 ways as a sum of consecutive naturals, for example, 251101 + ... + 252106.

It is an arithmetic number, because the mean of its divisors is an integer number (63404208).

Almost surely, 2^253113121 is an apocalyptic number.

It is an amenable number.

253113121 is a deficient number, since it is larger than the sum of its proper divisors (503711).

253113121 is an equidigital number, since it uses as much as digits as its factorization.

253113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503710.

The product of its digits is 180, while the sum is 19.

The square root of 253113121 is about 15909.5292513638. The cubic root of 253113121 is about 632.5646033779.

Adding to 253113121 its reverse (121311352), we get a palindrome (374424473).

The spelling of 253113121 in words is "two hundred fifty-three million, one hundred thirteen thousand, one hundred twenty-one".