53511121 has 8 divisors (see below), whose sum is σ = 56742120. Its totient is φ = 50289408.

The previous prime is 53511097. The next prime is 53511127. The reversal of 53511121 is 12111535.

It can be written as a sum of positive squares in 4 ways, for example, as 3101121 + 50410000 = 1761^2 + 7100^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53511121 - 2⁷ = 53510993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53511127) 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 7 ways as a sum of consecutive naturals, for example, 12195 + ... + 15991.

It is an arithmetic number, because the mean of its divisors is an integer number (7092765).

Almost surely, 2^53511121 is an apocalyptic number.

It is an amenable number.

53511121 is a deficient number, since it is larger than the sum of its proper divisors (3230999).

53511121 is a wasteful number, since it uses less digits than its factorization.

53511121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643.

The product of its digits is 150, while the sum is 19.

The square root of 53511121 is about 7315.1295955711. The cubic root of 53511121 is about 376.8322091499.

Adding to 53511121 its reverse (12111535), we get a palindrome (65622656).

The spelling of 53511121 in words is "fifty-three million, five hundred eleven thousand, one hundred twenty-one".