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5247281 = 13261509
BaseRepresentation
bin10100000001000100110001
3100212120220202
4110001010301
52320403111
6304244545
762413124
oct24010461
910776822
105247281
112a643a6
121910755
131119500
149a83bb
156d9b3b
hex501131

5247281 has 12 divisors (see below), whose sum is σ = 5786460. Its totient is φ = 4754880.

The previous prime is 5247269. The next prime is 5247299. The reversal of 5247281 is 1827425.

It can be written as a sum of positive squares in 6 ways, for example, as 1311025 + 3936256 = 1145^2 + 1984^2 .

It is not a de Polignac number, because 5247281 - 26 = 5247217 is a prime.

It is a super-2 number, since 2×52472812 = 55067915785922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5247241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10055 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (482205).

Almost surely, 25247281 is an apocalyptic number.

It is an amenable number.

5247281 is a deficient number, since it is larger than the sum of its proper divisors (539179).

5247281 is a wasteful number, since it uses less digits than its factorization.

5247281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 583 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 5247281 is about 2290.6944361918. The cubic root of 5247281 is about 173.7713228839.

The spelling of 5247281 in words is "five million, two hundred forty-seven thousand, two hundred eighty-one".

Divisors: 1 13 61 169 509 793 6617 10309 31049 86021 403637 5247281