247051 has 8 divisors (see below), whose sum is σ = 292320. Its totient is φ = 204288.

The previous prime is 247031. The next prime is 247067. The reversal of 247051 is 150742.

247051 = 4² + 5² + ... + 90².

247051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 247051 - 2⁷ = 246923 is a prime.

It is a super-2 number, since 2×247051² = 122068393202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247001) 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, 406 + ... + 811.

It is an arithmetic number, because the mean of its divisors is an integer number (36540).

2²⁴⁷⁰⁵¹ is an apocalyptic number.

247051 is the 406-th pentagonal number.

247051 is a deficient number, since it is larger than the sum of its proper divisors (45269).

247051 is a wasteful number, since it uses less digits than its factorization.

247051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253.

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

The square root of 247051 is about 497.0422517251. The cubic root of 247051 is about 62.7473716247.

Adding to 247051 its reverse (150742), we get a palindrome (397793).

The spelling of 247051 in words is "two hundred forty-seven thousand, fifty-one".