522321053 has 4 divisors (see below), whose sum is σ = 545030688. Its totient is φ = 499611420.

The previous prime is 522320999. The next prime is 522321067. The reversal of 522321053 is 350123225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 522321053 - 2¹⁴ = 522304669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 22709611 = 522321053 / (5 + 2 + 2 + 3 + 2 + 1 + 0 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522321083) 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, 11354783 + ... + 11354828.

It is an arithmetic number, because the mean of its divisors is an integer number (136257672).

Almost surely, 2^522321053 is an apocalyptic number.

It is an amenable number.

522321053 is a deficient number, since it is larger than the sum of its proper divisors (22709635).

522321053 is a wasteful number, since it uses less digits than its factorization.

522321053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22709634.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 522321053 is about 22854.3442916221. The cubic root of 522321053 is about 805.3398269464.

Adding to 522321053 its reverse (350123225), we get a palindrome (872444278).

The spelling of 522321053 in words is "five hundred twenty-two million, three hundred twenty-one thousand, fifty-three".