513425243 has 4 divisors (see below), whose sum is σ = 516871200. Its totient is φ = 509979288.

The previous prime is 513425219. The next prime is 513425249. The reversal of 513425243 is 342524315.

It is a happy number.

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 513425243 - 2⁶ = 513425179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513425249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722755 + ... + 1723052.

It is an arithmetic number, because the mean of its divisors is an integer number (129217800).

Almost surely, 2^513425243 is an apocalyptic number.

513425243 is a deficient number, since it is larger than the sum of its proper divisors (3445957).

513425243 is a wasteful number, since it uses less digits than its factorization.

513425243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445956.

The product of its digits is 14400, while the sum is 29.

The square root of 513425243 is about 22658.8888297727. Note that the first 4 decimals coincide. The cubic root of 513425243 is about 800.7416263380.

Adding to 513425243 its reverse (342524315), we get a palindrome (855949558).

The spelling of 513425243 in words is "five hundred thirteen million, four hundred twenty-five thousand, two hundred forty-three".