248487161 has 8 divisors (see below), whose sum is σ = 272651400. Its totient is φ = 225044352.

The previous prime is 248487157. The next prime is 248487179. The reversal of 248487161 is 161784842.

It can be written as a sum of positive squares in 4 ways, for example, as 33131536 + 215355625 = 5756^2 + 14675^2 .

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

It is not a de Polignac number, because 248487161 - 2² = 248487157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248487061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179636 + ... + 181013.

It is an arithmetic number, because the mean of its divisors is an integer number (34081425).

Almost surely, 2^248487161 is an apocalyptic number.

It is an amenable number.

248487161 is a deficient number, since it is larger than the sum of its proper divisors (24164239).

248487161 is a wasteful number, since it uses less digits than its factorization.

248487161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360715.

The product of its digits is 86016, while the sum is 41.

The square root of 248487161 is about 15763.4755368225. The cubic root of 248487161 is about 628.6872479983.

The spelling of 248487161 in words is "two hundred forty-eight million, four hundred eighty-seven thousand, one hundred sixty-one".