517493 has 4 divisors (see below), whose sum is σ = 519948. Its totient is φ = 515040.

The previous prime is 517487. The next prime is 517499. The reversal of 517493 is 394715.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (517487) and next prime (517499).

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 293764 = 473^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 517493 - 2¹⁰ = 516469 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 (517499) 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, 878 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (129987).

2⁵¹⁷⁴⁹³ is an apocalyptic number.

It is an amenable number.

517493 is a deficient number, since it is larger than the sum of its proper divisors (2455).

517493 is a wasteful number, since it uses less digits than its factorization.

517493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454.

The product of its digits is 3780, while the sum is 29.

The square root of 517493 is about 719.3698631441. The cubic root of 517493 is about 80.2850766844.

The spelling of 517493 in words is "five hundred seventeen thousand, four hundred ninety-three".