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5631129 = 32721132
BaseRepresentation
bin10101011110110010011001
3101121002110100
4111132302121
52420144004
6320410013
765602200
oct25366231
911532410
105631129
1131a6829
121a76909
13122213a
14a68237
15763739
hex55ec99

5631129 has 27 divisors (see below), whose sum is σ = 9546303. Its totient is φ = 3189312.

The previous prime is 5631121. The next prime is 5631169. The reversal of 5631129 is 9211365.

The square root of 5631129 is 2373.

It is a perfect power (a square), and thus also a powerful number.

5631129 is a `hidden beast` number, since 5 + 631 + 1 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 99225 + 5531904 = 315^2 + 2352^2 .

It is not a de Polignac number, because 5631129 - 23 = 5631121 is a prime.

It is a super-2 number, since 2×56311292 = 63419227629282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5631121) 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 26 ways as a sum of consecutive naturals, for example, 49777 + ... + 49889.

Almost surely, 25631129 is an apocalyptic number.

5631129 is the 2373-rd square number.

5631129 is the 1187-th centered octagonal number.

It is an amenable number.

5631129 is a deficient number, since it is larger than the sum of its proper divisors (3915174).

5631129 is a wasteful number, since it uses less digits than its factorization.

5631129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 123 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The cubic root of 5631129 is about 177.9092349609.

The spelling of 5631129 in words is "five million, six hundred thirty-one thousand, one hundred twenty-nine".