513330421 has 12 divisors (see below), whose sum is σ = 533052000. Its totient is φ = 494316368.

The previous prime is 513330407. The next prime is 513330437. The reversal of 513330421 is 124033315.

It is a de Polignac number, because none of the positive numbers 2^k-513330421 is a prime.

It is a super-2 number, since 2×513330421² = 527016242248074482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513330392 and 513330401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513330481) 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 11 ways as a sum of consecutive naturals, for example, 503250 + ... + 504268.

It is an arithmetic number, because the mean of its divisors is an integer number (44421000).

Almost surely, 2^513330421 is an apocalyptic number.

It is an amenable number.

513330421 is a deficient number, since it is larger than the sum of its proper divisors (19721579).

513330421 is a wasteful number, since it uses less digits than its factorization.

513330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 513330421 is about 22656.7963534124. The cubic root of 513330421 is about 800.6923282833.

Adding to 513330421 its reverse (124033315), we get a palindrome (637363736).

The spelling of 513330421 in words is "five hundred thirteen million, three hundred thirty thousand, four hundred twenty-one".