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248488081 is a prime number
BaseRepresentation
bin11101100111110…
…10000010010001
3122022120111120021
432303322002101
51002103104311
640353543441
76105054022
oct1663720221
9568514507
10248488081
111182a0856
126b274b81
133c63348a
1425004c49
1516c36171
hexecfa091

248488081 has 2 divisors, whose sum is σ = 248488082. Its totient is φ = 248488080.

The previous prime is 248488043. The next prime is 248488087. The reversal of 248488081 is 180884842.

It is a happy number.

248488081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183846481 + 64641600 = 13559^2 + 8040^2 .

It is a cyclic number.

It is not a de Polignac number, because 248488081 - 211 = 248486033 is a prime.

It is a super-2 number, since 2×2484880812 = 123492652798125122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (248488087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124244040 + 124244041.

It is an arithmetic number, because the mean of its divisors is an integer number (124244041).

Almost surely, 2248488081 is an apocalyptic number.

It is an amenable number.

248488081 is a deficient number, since it is larger than the sum of its proper divisors (1).

248488081 is an equidigital number, since it uses as much as digits as its factorization.

248488081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131072, while the sum is 43.

The square root of 248488081 is about 15763.5047181774. The cubic root of 248488081 is about 628.6880238822.

The spelling of 248488081 in words is "two hundred forty-eight million, four hundred eighty-eight thousand, eighty-one".