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41287081 = 113753371
BaseRepresentation
bin1001110101111…
…1110110101001
32212200121020011
42131133312221
541032141311
64032531521
71010635333
oct235376651
985617204
1041287081
112133a660
12119b0ba1
138727634
1456aa453
153958321
hex275fda9

41287081 has 4 divisors (see below), whose sum is σ = 45040464. Its totient is φ = 37533700.

The previous prime is 41287027. The next prime is 41287087. The reversal of 41287081 is 18078214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 41287081 - 27 = 41286953 is a prime.

It is a super-2 number, since 2×412870812 = 3409246115001122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41287087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876675 + ... + 1876696.

It is an arithmetic number, because the mean of its divisors is an integer number (11260116).

Almost surely, 241287081 is an apocalyptic number.

It is an amenable number.

41287081 is a deficient number, since it is larger than the sum of its proper divisors (3753383).

41287081 is a wasteful number, since it uses less digits than its factorization.

41287081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753382.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 41287081 is about 6425.5023928095. The cubic root of 41287081 is about 345.6246639893.

The spelling of 41287081 in words is "forty-one million, two hundred eighty-seven thousand, eighty-one".

Divisors: 1 11 3753371 41287081