513161144 has 8 divisors (see below), whose sum is σ = 962177160. Its totient is φ = 256580568.

The previous prime is 513161113. The next prime is 513161147. The reversal of 513161144 is 441161315.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×513161144² = 526668719422777472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513161147) 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 as a sum of consecutive naturals, namely, 32072564 + ... + 32072579.

It is an arithmetic number, because the mean of its divisors is an integer number (120272145).

Almost surely, 2^513161144 is an apocalyptic number.

It is an amenable number.

513161144 is a deficient number, since it is larger than the sum of its proper divisors (449016016).

513161144 is a wasteful number, since it uses less digits than its factorization.

513161144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64145149 (or 64145145 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 513161144 is about 22653.0603671998. The cubic root of 513161144 is about 800.6043059030.

The spelling of 513161144 in words is "five hundred thirteen million, one hundred sixty-one thousand, one hundred forty-four".