653044523 has 4 divisors (see below), whose sum is σ = 654103560. Its totient is φ = 651985488.

The previous prime is 653044519. The next prime is 653044529. The reversal of 653044523 is 325440356.

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 653044523 - 2² = 653044519 is a prime.

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 653044523.

It is not an unprimeable number, because it can be changed into a prime (653044529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528593 + ... + 529826.

It is an arithmetic number, because the mean of its divisors is an integer number (163525890).

Almost surely, 2^653044523 is an apocalyptic number.

653044523 is a deficient number, since it is larger than the sum of its proper divisors (1059037).

653044523 is a wasteful number, since it uses less digits than its factorization.

653044523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059036.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 653044523 is about 25554.7358233264. The cubic root of 653044523 is about 867.5894530252.

Adding to 653044523 its reverse (325440356), we get a palindrome (978484879).

The spelling of 653044523 in words is "six hundred fifty-three million, forty-four thousand, five hundred twenty-three".