53243121 has 8 divisors (see below), whose sum is σ = 71642560. Its totient is φ = 35169552.

The previous prime is 53243119. The next prime is 53243123. The reversal of 53243121 is 12134235.

It is an interprime number because it is at equal distance from previous prime (53243119) and next prime (53243123).

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

It is not a de Polignac number, because 53243121 - 2¹ = 53243119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53243123) 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, 81085 + ... + 81738.

It is an arithmetic number, because the mean of its divisors is an integer number (8955320).

Almost surely, 2^53243121 is an apocalyptic number.

It is an amenable number.

53243121 is a deficient number, since it is larger than the sum of its proper divisors (18399439).

53243121 is a wasteful number, since it uses less digits than its factorization.

53243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162935.

The product of its digits is 720, while the sum is 21.

The square root of 53243121 is about 7296.7884031264. The cubic root of 53243121 is about 376.2020591375.

Adding to 53243121 its reverse (12134235), we get a palindrome (65377356).

The spelling of 53243121 in words is "fifty-three million, two hundred forty-three thousand, one hundred twenty-one".