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5805031 = 7181761
BaseRepresentation
bin10110001001001111100111
3101220221000011
4112021033213
52441230111
6324231051
7100225201
oct26111747
911827004
105805031
113305451
121b3b487
13128333b
14ab1771
1579a021
hex5893e7

5805031 has 4 divisors (see below), whose sum is σ = 5886864. Its totient is φ = 5723200.

The previous prime is 5805011. The next prime is 5805053. The reversal of 5805031 is 1305085.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1305085 = 5261017.

It is a cyclic number.

It is not a de Polignac number, because 5805031 - 217 = 5673959 is a prime.

It is a super-2 number, since 2×58050312 = 67396769821922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5804993 and 5805011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5805011) 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 3 ways as a sum of consecutive naturals, for example, 40810 + ... + 40951.

It is an arithmetic number, because the mean of its divisors is an integer number (1471716).

Almost surely, 25805031 is an apocalyptic number.

5805031 is the 1078-th centered decagonal number.

5805031 is a deficient number, since it is larger than the sum of its proper divisors (81833).

5805031 is an equidigital number, since it uses as much as digits as its factorization.

5805031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81832.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 5805031 is about 2409.3631938751. The cubic root of 5805031 is about 179.7221123645.

It can be divided in two parts, 58050 and 31, that added together give a square (58081 = 2412).

The spelling of 5805031 in words is "five million, eight hundred five thousand, thirty-one".

Divisors: 1 71 81761 5805031