247075117 has 4 divisors (see below), whose sum is σ = 248368896. Its totient is φ = 245781340.

The previous prime is 247075111. The next prime is 247075121. The reversal of 247075117 is 711570742.

247075117 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247075117 is a prime.

It is a super-2 number, since 2×247075117² = 122092226881127378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247075111) 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, 646603 + ... + 646984.

It is an arithmetic number, because the mean of its divisors is an integer number (62092224).

Almost surely, 2^247075117 is an apocalyptic number.

It is an amenable number.

247075117 is a deficient number, since it is larger than the sum of its proper divisors (1293779).

247075117 is a wasteful number, since it uses less digits than its factorization.

247075117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293778.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 247075117 is about 15718.6232539622. The cubic root of 247075117 is about 627.4941334774.

The spelling of 247075117 in words is "two hundred forty-seven million, seventy-five thousand, one hundred seventeen".