53511233 has 4 divisors (see below), whose sum is σ = 53646420. Its totient is φ = 53376048.

The previous prime is 53511197. The next prime is 53511253. The reversal of 53511233 is 33211535.

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 47789569 + 5721664 = 6913^2 + 2392^2 .

It is a cyclic number.

It is not a de Polignac number, because 53511233 - 2¹⁰ = 53510209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53511199 and 53511208.

It is not an unprimeable number, because it can be changed into a prime (53511253) 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, 66998 + ... + 67791.

It is an arithmetic number, because the mean of its divisors is an integer number (13411605).

Almost surely, 2^53511233 is an apocalyptic number.

It is an amenable number.

53511233 is a deficient number, since it is larger than the sum of its proper divisors (135187).

53511233 is a wasteful number, since it uses less digits than its factorization.

53511233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135186.

The product of its digits is 1350, while the sum is 23.

The square root of 53511233 is about 7315.1372509338. The cubic root of 53511233 is about 376.8324720559.

Adding to 53511233 its reverse (33211535), we get a palindrome (86722768).

The spelling of 53511233 in words is "fifty-three million, five hundred eleven thousand, two hundred thirty-three".