247015 has 8 divisors (see below), whose sum is σ = 299520. Its totient is φ = 195552.

The previous prime is 247007. The next prime is 247031. The reversal of 247015 is 510742.

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 247015 - 2³ = 247007 is a prime.

It is a super-2 number, since 2×247015² = 122032820450, which contains 22 as substring.

247015 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 246983 and 247001.

It is a congruent number.

It is an unprimeable number.

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, 441 + ... + 829.

It is an arithmetic number, because the mean of its divisors is an integer number (37440).

2²⁴⁷⁰¹⁵ is an apocalyptic number.

247015 is a deficient number, since it is larger than the sum of its proper divisors (52505).

247015 is a wasteful number, since it uses less digits than its factorization.

247015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 247015 is about 497.0060361806. The cubic root of 247015 is about 62.7443236507.

Adding to 247015 its reverse (510742), we get a palindrome (757757).

It can be divided in two parts, 2470 and 15, that added together give a triangular number (2485 = T₇₀).

The spelling of 247015 in words is "two hundred forty-seven thousand, fifteen".