53563231 has 4 divisors (see below), whose sum is σ = 54573912. Its totient is φ = 52552552.

The previous prime is 53563201. The next prime is 53563249. The reversal of 53563231 is 13236535.

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 53563231 - 2⁵ = 53563199 is a prime.

It is a super-2 number, since 2×53563231² = 5738039430318722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53563231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53563201) 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, 505261 + ... + 505366.

It is an arithmetic number, because the mean of its divisors is an integer number (13643478).

Almost surely, 2^53563231 is an apocalyptic number.

53563231 is a deficient number, since it is larger than the sum of its proper divisors (1010681).

53563231 is a wasteful number, since it uses less digits than its factorization.

53563231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010680.

The product of its digits is 8100, while the sum is 28.

The square root of 53563231 is about 7318.6905249505. The cubic root of 53563231 is about 376.9544912433.

Adding to 53563231 its reverse (13236535), we get a palindrome (66799766).

The spelling of 53563231 in words is "fifty-three million, five hundred sixty-three thousand, two hundred thirty-one".