53506231 has 4 divisors (see below), whose sum is σ = 53528832. Its totient is φ = 53483632.

The previous prime is 53506213. The next prime is 53506283. The reversal of 53506231 is 13260535.

It is a happy number.

53506231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 53506231 - 2¹⁵ = 53473463 is a prime.

It is a super-2 number, since 2×53506231² = 5725833511650722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53506196 and 53506205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53507231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7270 + ... + 12643.

It is an arithmetic number, because the mean of its divisors is an integer number (13382208).

Almost surely, 2^53506231 is an apocalyptic number.

53506231 is a deficient number, since it is larger than the sum of its proper divisors (22601).

53506231 is a wasteful number, since it uses less digits than its factorization.

53506231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22600.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 53506231 is about 7314.7953491537. The cubic root of 53506231 is about 376.8207301302.

Adding to 53506231 its reverse (13260535), we get a palindrome (66766766).

The spelling of 53506231 in words is "fifty-three million, five hundred six thousand, two hundred thirty-one".