247272481 has 8 divisors (see below), whose sum is σ = 255009600. Its totient is φ = 239653680.

The previous prime is 247272469. The next prime is 247272511. The reversal of 247272481 is 184272742.

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 247272481 - 2¹¹ = 247270433 is a prime.

It is a super-2 number, since 2×247272481² = 122287359719790722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 247272481.

It is not an unprimeable number, because it can be changed into a prime (247272581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25326 + ... + 33703.

It is an arithmetic number, because the mean of its divisors is an integer number (31876200).

Almost surely, 2^247272481 is an apocalyptic number.

It is an amenable number.

247272481 is a deficient number, since it is larger than the sum of its proper divisors (7737119).

247272481 is an equidigital number, since it uses as much as digits as its factorization.

247272481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59159.

The product of its digits is 50176, while the sum is 37.

The square root of 247272481 is about 15724.9000314787. The cubic root of 247272481 is about 627.6611701159.

The spelling of 247272481 in words is "two hundred forty-seven million, two hundred seventy-two thousand, four hundred eighty-one".