248472181 has 2 divisors, whose sum is σ = 248472182. Its totient is φ = 248472180.

The previous prime is 248472167. The next prime is 248472199. The reversal of 248472181 is 181274842.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205779025 + 42693156 = 14345^2 + 6534^2 .

It is a cyclic number.

It is not a de Polignac number, because 248472181 - 2⁷ = 248472053 is a prime.

It is a super-2 number, since 2×248472181² = 123476849461793522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 248472181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248476181) 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 as a sum of consecutive naturals, namely, 124236090 + 124236091.

It is an arithmetic number, because the mean of its divisors is an integer number (124236091).

Almost surely, 2^248472181 is an apocalyptic number.

It is an amenable number.

248472181 is a deficient number, since it is larger than the sum of its proper divisors (1).

248472181 is an equidigital number, since it uses as much as digits as its factorization.

248472181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28672, while the sum is 37.

The square root of 248472181 is about 15763.0003806382. Note that the first 3 decimals coincide. The cubic root of 248472181 is about 628.6746143151.

It can be divided in two parts, 24847 and 2181, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 248472181 in words is "two hundred forty-eight million, four hundred seventy-two thousand, one hundred eighty-one".