523330513 has 4 divisors (see below), whose sum is σ = 524193280. Its totient is φ = 522467748.

The previous prime is 523330487. The next prime is 523330517. The reversal of 523330513 is 315033325.

It is a happy number.

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 523330513 - 2¹³ = 523322321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523330517) 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, 430473 + ... + 431686.

It is an arithmetic number, because the mean of its divisors is an integer number (131048320).

Almost surely, 2^523330513 is an apocalyptic number.

It is an amenable number.

523330513 is a deficient number, since it is larger than the sum of its proper divisors (862767).

523330513 is an equidigital number, since it uses as much as digits as its factorization.

523330513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862766.

The product of its (nonzero) digits is 4050, while the sum is 25.

The square root of 523330513 is about 22876.4182729727. The cubic root of 523330513 is about 805.8583044737.

Adding to 523330513 its reverse (315033325), we get a palindrome (838363838).

The spelling of 523330513 in words is "five hundred twenty-three million, three hundred thirty thousand, five hundred thirteen".