53053643 has 12 divisors (see below), whose sum is σ = 56299608. Its totient is φ = 49986720.

The previous prime is 53053639. The next prime is 53053657. The reversal of 53053643 is 34635035.

It is a happy number.

It is not a de Polignac number, because 53053643 - 2² = 53053639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53053603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101180 + ... + 101702.

It is an arithmetic number, because the mean of its divisors is an integer number (4691634).

Almost surely, 2^53053643 is an apocalyptic number.

53053643 is a deficient number, since it is larger than the sum of its proper divisors (3245965).

53053643 is a wasteful number, since it uses less digits than its factorization.

53053643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 29.

The square root of 53053643 is about 7283.7931738895. The cubic root of 53053643 is about 375.7552612673.

Adding to 53053643 its reverse (34635035), we get a palindrome (87688678).

The spelling of 53053643 in words is "fifty-three million, fifty-three thousand, six hundred forty-three".