513644461 has 16 divisors (see below), whose sum is σ = 599515200. Its totient is φ = 435110400.

The previous prime is 513644449. The next prime is 513644513. The reversal of 513644461 is 164446315.

It is a cyclic number.

It is not a de Polignac number, because 513644461 - 2¹³ = 513636269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513644401) 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 15 ways as a sum of consecutive naturals, for example, 7396 + ... + 32893.

It is an arithmetic number, because the mean of its divisors is an integer number (37469700).

Almost surely, 2^513644461 is an apocalyptic number.

It is an amenable number.

513644461 is a deficient number, since it is larger than the sum of its proper divisors (85870739).

513644461 is a wasteful number, since it uses less digits than its factorization.

513644461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40380.

The product of its digits is 34560, while the sum is 34.

The square root of 513644461 is about 22663.7256645945. The cubic root of 513644461 is about 800.8555747677.

The spelling of 513644461 in words is "five hundred thirteen million, six hundred forty-four thousand, four hundred sixty-one".