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248552081 = 10312719001
BaseRepresentation
bin11101101000010…
…01101010010001
3122022200202100122
432310021222101
51002112131311
640355200025
76105441431
oct1664115221
9568622318
10248552081
11118334948
126b2a6015
133c65664b
14250202c1
1516c4a0db
hexed09a91

248552081 has 8 divisors (see below), whose sum is σ = 252954624. Its totient is φ = 244188000.

The previous prime is 248552071. The next prime is 248552093. The reversal of 248552081 is 180255842.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-248552081 is a prime.

It is a super-2 number, since 2×2485520812 = 123556273938861122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248552021) 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, 3581 + ... + 22581.

It is an arithmetic number, because the mean of its divisors is an integer number (31619328).

Almost surely, 2248552081 is an apocalyptic number.

It is an amenable number.

248552081 is a deficient number, since it is larger than the sum of its proper divisors (4402543).

248552081 is a wasteful number, since it uses less digits than its factorization.

248552081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19231.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 248552081 is about 15765.5345929023. The cubic root of 248552081 is about 628.7419937138.

The spelling of 248552081 in words is "two hundred forty-eight million, five hundred fifty-two thousand, eighty-one".

Divisors: 1 103 127 13081 19001 1957103 2413127 248552081