247081 has 4 divisors (see below), whose sum is σ = 248464. Its totient is φ = 245700.

The previous prime is 247073. The next prime is 247087. The reversal of 247081 is 180742.

247081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180742 = 2 ⋅90371.

It is a cyclic number.

It is not a de Polignac number, because 247081 - 2³ = 247073 is a prime.

It is a super-2 number, since 2×247081² = 122098041122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375 + ... + 796.

It is an arithmetic number, because the mean of its divisors is an integer number (62116).

2²⁴⁷⁰⁸¹ is an apocalyptic number.

It is an amenable number.

247081 is a deficient number, since it is larger than the sum of its proper divisors (1383).

247081 is a wasteful number, since it uses less digits than its factorization.

247081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 247081 is about 497.0724293300. The cubic root of 247081 is about 62.7499113769.

The spelling of 247081 in words is "two hundred forty-seven thousand, eighty-one".