513223441 has 4 divisors (see below), whose sum is σ = 513805552. Its totient is φ = 512641332.

The previous prime is 513223427. The next prime is 513223457. The reversal of 513223441 is 144322315.

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 513223441 - 2⁹ = 513222929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513223471) 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, 289731 + ... + 291496.

It is an arithmetic number, because the mean of its divisors is an integer number (128451388).

Almost surely, 2^513223441 is an apocalyptic number.

It is an amenable number.

513223441 is a deficient number, since it is larger than the sum of its proper divisors (582111).

513223441 is an equidigital number, since it uses as much as digits as its factorization.

513223441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582110.

The product of its digits is 2880, while the sum is 25.

The square root of 513223441 is about 22654.4353493968. The cubic root of 513223441 is about 800.6367019830.

Adding to 513223441 its reverse (144322315), we get a palindrome (657545756).

The spelling of 513223441 in words is "five hundred thirteen million, two hundred twenty-three thousand, four hundred forty-one".