513413444 has 24 divisors (see below), whose sum is σ = 933047808. Its totient is φ = 246928320.

The previous prime is 513413431. The next prime is 513413449. The reversal of 513413444 is 444314315.

It is a happy number.

It is a super-2 number, since 2×513413444² = 527186728959882272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513413449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8312 + ... + 33104.

It is an arithmetic number, because the mean of its divisors is an integer number (38876992).

Almost surely, 2^513413444 is an apocalyptic number.

It is an amenable number.

513413444 is a deficient number, since it is larger than the sum of its proper divisors (419634364).

513413444 is a wasteful number, since it uses less digits than its factorization.

513413444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24995 (or 24993 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 513413444 is about 22658.6284668777. The cubic root of 513413444 is about 800.7354923565.

Adding to 513413444 its reverse (444314315), we get a palindrome (957727759).

The spelling of 513413444 in words is "five hundred thirteen million, four hundred thirteen thousand, four hundred forty-four".