1521452513 has 4 divisors (see below), whose sum is σ = 1738802880. Its totient is φ = 1304102148.

The previous prime is 1521452509. The next prime is 1521452533. The reversal of 1521452513 is 3152541251.

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 1521452513 - 2² = 1521452509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1521452533) 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, 108675173 + ... + 108675186.

It is an arithmetic number, because the mean of its divisors is an integer number (434700720).

Almost surely, 2^1521452513 is an apocalyptic number.

It is an amenable number.

1521452513 is a deficient number, since it is larger than the sum of its proper divisors (217350367).

1521452513 is an equidigital number, since it uses as much as digits as its factorization.

1521452513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217350366.

The product of its digits is 6000, while the sum is 29.

The square root of 1521452513 is about 39005.8010172846. The cubic root of 1521452513 is about 1150.1455425121.

Adding to 1521452513 its reverse (3152541251), we get a palindrome (4673993764).

The spelling of 1521452513 in words is "one billion, five hundred twenty-one million, four hundred fifty-two thousand, five hundred thirteen".