513661144 has 32 divisors (see below), whose sum is σ = 999440640. Its totient is φ = 247312800.

The previous prime is 513661111. The next prime is 513661153. The reversal of 513661144 is 441166315.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13909 + ... + 34939.

It is an arithmetic number, because the mean of its divisors is an integer number (31232520).

Almost surely, 2^513661144 is an apocalyptic number.

It is an amenable number.

513661144 is a deficient number, since it is larger than the sum of its proper divisors (485779496).

513661144 is a wasteful number, since it uses less digits than its factorization.

513661144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21151 (or 21147 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 513661144 is about 22664.0937167141. The cubic root of 513661144 is about 800.8642451808.

The spelling of 513661144 in words is "five hundred thirteen million, six hundred sixty-one thousand, one hundred forty-four".