253445121 has 12 divisors (see below), whose sum is σ = 371552272. Its totient is φ = 166441176.

The previous prime is 253445113. The next prime is 253445141. The reversal of 253445121 is 121544352.

253445121 is a `hidden beast` number, since 2 + 534 + 4 + 5 + 121 = 666.

It is not a de Polignac number, because 253445121 - 2³ = 253445113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253445111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209551 + ... + 210756.

Almost surely, 2^253445121 is an apocalyptic number.

It is an amenable number.

253445121 is a deficient number, since it is larger than the sum of its proper divisors (118107151).

253445121 is a wasteful number, since it uses less digits than its factorization.

253445121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420380 (or 420377 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 253445121 is about 15919.9598303513. The cubic root of 253445121 is about 632.8410538081.

Adding to 253445121 its reverse (121544352), we get a palindrome (374989473).

The spelling of 253445121 in words is "two hundred fifty-three million, four hundred forty-five thousand, one hundred twenty-one".