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6552081 = 321574637
BaseRepresentation
bin11000111111101000010001
3110022212202200
4120333220101
53134131311
6352233413
7106456164
oct30775021
913285680
106552081
113775748
12223b869
131485393
14c27adb
15896556
hex63fa11

6552081 has 12 divisors (see below), whose sum is σ = 9526452. Its totient is φ = 4339296.

The previous prime is 6552061. The next prime is 6552083. The reversal of 6552081 is 1802556.

6552081 is a `hidden beast` number, since 65 + 520 + 81 = 666.

6552081 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1782225 + 4769856 = 1335^2 + 2184^2 .

It is not a de Polignac number, because 6552081 - 29 = 6551569 is a prime.

It is a super-2 number, since 2×65520812 = 85859530861122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6552083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 906 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (793871).

Almost surely, 26552081 is an apocalyptic number.

It is an amenable number.

6552081 is a deficient number, since it is larger than the sum of its proper divisors (2974371).

6552081 is a wasteful number, since it uses less digits than its factorization.

6552081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800 (or 4797 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 6552081 is about 2559.7033031193. The cubic root of 6552081 is about 187.1226758506.

The spelling of 6552081 in words is "six million, five hundred fifty-two thousand, eighty-one".

Divisors: 1 3 9 157 471 1413 4637 13911 41733 728009 2184027 6552081