53021323 has 4 divisors (see below), whose sum is σ = 54314568. Its totient is φ = 51728080.

The previous prime is 53021303. The next prime is 53021327. The reversal of 53021323 is 32312035.

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 53021323 - 2⁵ = 53021291 is a prime.

It is a super-2 number, since 2×53021323² = 5622521385340658, 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 53021323.

It is not an unprimeable number, because it can be changed into a prime (53021327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646561 + ... + 646642.

It is an arithmetic number, because the mean of its divisors is an integer number (13578642).

Almost surely, 2^53021323 is an apocalyptic number.

53021323 is a deficient number, since it is larger than the sum of its proper divisors (1293245).

53021323 is a wasteful number, since it uses less digits than its factorization.

53021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293244.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 53021323 is about 7281.5742116660. The cubic root of 53021323 is about 375.6789430587.

Adding to 53021323 its reverse (32312035), we get a palindrome (85333358).

The spelling of 53021323 in words is "fifty-three million, twenty-one thousand, three hundred twenty-three".