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87945041 = 374157973
BaseRepresentation
bin1010011110111…
…10111101010001
320010111001220202
411033132331101
5140003220131
612420544545
72115343352
oct517367521
9203431822
1087945041
1145708458
1225552155
13152b27b2
14b973d29
157ac2bcb
hex53def51

87945041 has 8 divisors (see below), whose sum is σ = 92526504. Its totient is φ = 83479680.

The previous prime is 87945017. The next prime is 87945059. The reversal of 87945041 is 14054978.

It can be written as a sum of positive squares in 4 ways, for example, as 1380625 + 86564416 = 1175^2 + 9304^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87945041 - 218 = 87682897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87944986 and 87945004.

It is not an unprimeable number, because it can be changed into a prime (87945001) 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 7 ways as a sum of consecutive naturals, for example, 27470 + ... + 30503.

It is an arithmetic number, because the mean of its divisors is an integer number (11565813).

Almost surely, 287945041 is an apocalyptic number.

It is an amenable number.

87945041 is a deficient number, since it is larger than the sum of its proper divisors (4581463).

87945041 is a wasteful number, since it uses less digits than its factorization.

87945041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58051.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 87945041 is about 9377.9017375957. The cubic root of 87945041 is about 444.7034020716.

The spelling of 87945041 in words is "eighty-seven million, nine hundred forty-five thousand, forty-one".

Divisors: 1 37 41 1517 57973 2145001 2376893 87945041