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5387181 = 317731447
BaseRepresentation
bin10100100011001110101101
3101010200211020
4110203032231
52334342211
6311244353
763535032
oct24431655
911120736
105387181
11304a518
1219796b9
1311680a7
14a03389
15716306
hex5233ad

5387181 has 16 divisors (see below), whose sum is σ = 7714944. Its totient is φ = 3331584.

The previous prime is 5387177. The next prime is 5387189. The reversal of 5387181 is 1817835.

5387181 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5387181 - 22 = 5387177 is a prime.

It is a super-2 number, since 2×53871812 = 58043438253522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5387189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3000 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (482184).

Almost surely, 25387181 is an apocalyptic number.

5387181 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

5387181 is the 1241-st nonagonal number.

It is an amenable number.

5387181 is a deficient number, since it is larger than the sum of its proper divisors (2327763).

5387181 is a wasteful number, since it uses less digits than its factorization.

5387181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540.

The product of its digits is 6720, while the sum is 33.

The square root of 5387181 is about 2321.0301592181. The cubic root of 5387181 is about 175.3021284309.

The spelling of 5387181 in words is "five million, three hundred eighty-seven thousand, one hundred eighty-one".

Divisors: 1 3 17 51 73 219 1241 1447 3723 4341 24599 73797 105631 316893 1795727 5387181