53644231 has 16 divisors (see below), whose sum is σ = 58017600. Its totient is φ = 49420800.

The previous prime is 53644207. The next prime is 53644271. The reversal of 53644231 is 13244635.

It is a cyclic number.

It is not a de Polignac number, because 53644231 - 2⁷ = 53644103 is a prime.

It is a super-2 number, since 2×53644231² = 5755407039162722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53644231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53644271) 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, 269470 + ... + 269668.

It is an arithmetic number, because the mean of its divisors is an integer number (3626100).

Almost surely, 2^53644231 is an apocalyptic number.

53644231 is a deficient number, since it is larger than the sum of its proper divisors (4373369).

53644231 is a wasteful number, since it uses less digits than its factorization.

53644231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474.

The product of its digits is 8640, while the sum is 28.

The square root of 53644231 is about 7324.2222112658. Note that the first 4 decimals coincide. The cubic root of 53644231 is about 377.1444096817.

Adding to 53644231 its reverse (13244635), we get a palindrome (66888866).

The spelling of 53644231 in words is "fifty-three million, six hundred forty-four thousand, two hundred thirty-one".