513425251 has 16 divisors (see below), whose sum is σ = 555724800. Its totient is φ = 472883488.

The previous prime is 513425249. The next prime is 513425261. The reversal of 513425251 is 152524315.

It is a cyclic number.

It is not a de Polignac number, because 513425251 - 2¹ = 513425249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513425261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318690 + ... + 320296.

It is an arithmetic number, because the mean of its divisors is an integer number (34732800).

Almost surely, 2^513425251 is an apocalyptic number.

513425251 is a deficient number, since it is larger than the sum of its proper divisors (42299549).

513425251 is a wasteful number, since it uses less digits than its factorization.

513425251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its digits is 6000, while the sum is 28.

The square root of 513425251 is about 22658.8890063039. The cubic root of 513425251 is about 800.7416304970.

Adding to 513425251 its reverse (152524315), we get a palindrome (665949566).

The spelling of 513425251 in words is "five hundred thirteen million, four hundred twenty-five thousand, two hundred fifty-one".