513946 has 8 divisors (see below), whose sum is σ = 774324. Its totient is φ = 255840.

The previous prime is 513943. The next prime is 513977. The reversal of 513946 is 649315.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 105625 = 639^2 + 325^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (513943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216 + ... + 1036.

2⁵¹³⁹⁴⁶ is an apocalyptic number.

513946 is a deficient number, since it is larger than the sum of its proper divisors (260378).

513946 is a wasteful number, since it uses less digits than its factorization.

513946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136.

The product of its digits is 3240, while the sum is 28.

The square root of 513946 is about 716.9002720044. The cubic root of 513946 is about 80.1012260288.

The spelling of 513946 in words is "five hundred thirteen thousand, nine hundred forty-six".