53523231 has 16 divisors (see below), whose sum is σ = 74732544. Its totient is φ = 34009184.

The previous prime is 53523227. The next prime is 53523287. The reversal of 53523231 is 13232535.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53523231 - 2² = 53523227 is a prime.

It is a super-2 number, since 2×53523231² = 5729472513358722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53523221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20650 + ... + 23096.

It is an arithmetic number, because the mean of its divisors is an integer number (4670784).

Almost surely, 2^53523231 is an apocalyptic number.

53523231 is a deficient number, since it is larger than the sum of its proper divisors (21209313).

53523231 is a wasteful number, since it uses less digits than its factorization.

53523231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790.

The product of its digits is 2700, while the sum is 24.

The square root of 53523231 is about 7315.9572852772. The cubic root of 53523231 is about 376.8606337326.

Adding to 53523231 its reverse (13232535), we get a palindrome (66755766).

The spelling of 53523231 in words is "fifty-three million, five hundred twenty-three thousand, two hundred thirty-one".