247161271 has 8 divisors (see below), whose sum is σ = 282636704. Its totient is φ = 211727520.

The previous prime is 247161251. The next prime is 247161307. The reversal of 247161271 is 172161742.

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 247161271 - 2⁷ = 247161143 is a prime.

It is a super-2 number, since 2×247161271² = 122177387764670882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247161251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3541 + ... + 22513.

It is an arithmetic number, because the mean of its divisors is an integer number (35329588).

Almost surely, 2^247161271 is an apocalyptic number.

247161271 is a deficient number, since it is larger than the sum of its proper divisors (35475433).

247161271 is a wasteful number, since it uses less digits than its factorization.

247161271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20841.

The product of its digits is 4704, while the sum is 31.

The square root of 247161271 is about 15721.3635222903. The cubic root of 247161271 is about 627.5670598110.

The spelling of 247161271 in words is "two hundred forty-seven million, one hundred sixty-one thousand, two hundred seventy-one".