248815247 has 4 divisors (see below), whose sum is σ = 263451456. Its totient is φ = 234179040.

The previous prime is 248815201. The next prime is 248815261. The reversal of 248815247 is 742518842.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 248815247 - 2¹² = 248811151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248815267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7318079 + ... + 7318112.

It is an arithmetic number, because the mean of its divisors is an integer number (65862864).

Almost surely, 2^248815247 is an apocalyptic number.

248815247 is a deficient number, since it is larger than the sum of its proper divisors (14636209).

248815247 is a wasteful number, since it uses less digits than its factorization.

248815247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14636208.

The product of its digits is 143360, while the sum is 41.

The square root of 248815247 is about 15773.8786289232. The cubic root of 248815247 is about 628.9638186553.

The spelling of 248815247 in words is "two hundred forty-eight million, eight hundred fifteen thousand, two hundred forty-seven".