247513 has 8 divisors (see below), whose sum is σ = 297920. Its totient is φ = 200880.

The previous prime is 247501. The next prime is 247519. The reversal of 247513 is 315742.

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

It is a cyclic number.

It is not a de Polignac number, because 247513 - 2⁹ = 247001 is a prime.

It is a super-2 number, since 2×247513² = 122525370338, which contains 22 as substring.

247513 is a modest number, since divided by 513 gives 247 as remainder.

It is a nialpdrome in base 8 and base 13.

It is not an unprimeable number, because it can be changed into a prime (247519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798 + ... + 1063.

It is an arithmetic number, because the mean of its divisors is an integer number (37240).

2²⁴⁷⁵¹³ is an apocalyptic number.

It is an amenable number.

247513 is a deficient number, since it is larger than the sum of its proper divisors (50407).

247513 is a wasteful number, since it uses less digits than its factorization.

247513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887.

The product of its digits is 840, while the sum is 22.

The square root of 247513 is about 497.5067838733. The cubic root of 247513 is about 62.7864610353.

The spelling of 247513 in words is "two hundred forty-seven thousand, five hundred thirteen".