53043121 has 4 divisors (see below), whose sum is σ = 53158644. Its totient is φ = 52927600.

The previous prime is 53043103. The next prime is 53043143. The reversal of 53043121 is 12134035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11826721 + 41216400 = 3439^2 + 6420^2 .

It is a cyclic number.

It is not a de Polignac number, because 53043121 - 2⁷ = 53042993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53043161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57070 + ... + 57991.

It is an arithmetic number, because the mean of its divisors is an integer number (13289661).

Almost surely, 2^53043121 is an apocalyptic number.

It is an amenable number.

53043121 is a deficient number, since it is larger than the sum of its proper divisors (115523).

53043121 is a wasteful number, since it uses less digits than its factorization.

53043121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115522.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 53043121 is about 7283.0708495799. The cubic root of 53043121 is about 375.7304187492.

Adding to 53043121 its reverse (12134035), we get a palindrome (65177156).

The spelling of 53043121 in words is "fifty-three million, forty-three thousand, one hundred twenty-one".