520534653 has 4 divisors (see below), whose sum is σ = 694046208. Its totient is φ = 347023100.

The previous prime is 520534631. The next prime is 520534667. The reversal of 520534653 is 356435025.

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 520534653 - 2¹⁷ = 520403581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520530653) 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, 86755773 + ... + 86755778.

It is an arithmetic number, because the mean of its divisors is an integer number (173511552).

Almost surely, 2^520534653 is an apocalyptic number.

It is an amenable number.

520534653 is a deficient number, since it is larger than the sum of its proper divisors (173511555).

520534653 is a wasteful number, since it uses less digits than its factorization.

520534653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173511554.

The product of its (nonzero) digits is 54000, while the sum is 33.

The square root of 520534653 is about 22815.2285327147. The cubic root of 520534653 is about 804.4206589939.

Adding to 520534653 its reverse (356435025), we get a palindrome (876969678).

The spelling of 520534653 in words is "five hundred twenty million, five hundred thirty-four thousand, six hundred fifty-three".