53321543 has 8 divisors (see below), whose sum is σ = 61230720. Its totient is φ = 45922680.

The previous prime is 53321533. The next prime is 53321549. The reversal of 53321543 is 34512335.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53321543 - 2⁶ = 53321479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53321549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127355 + ... + 127772.

It is an arithmetic number, because the mean of its divisors is an integer number (7653840).

Almost surely, 2^53321543 is an apocalyptic number.

53321543 is a deficient number, since it is larger than the sum of its proper divisors (7909177).

53321543 is a wasteful number, since it uses less digits than its factorization.

53321543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255157.

The product of its digits is 5400, while the sum is 26.

The square root of 53321543 is about 7302.1601598431. The cubic root of 53321543 is about 376.3866716870.

Adding to 53321543 its reverse (34512335), we get a palindrome (87833878).

The spelling of 53321543 in words is "fifty-three million, three hundred twenty-one thousand, five hundred forty-three".