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85632049 = 431991443
BaseRepresentation
bin1010001101010…
…10010000110001
312222010120002101
411012222100301
5133410211144
612255220401
72056601056
oct506522061
9188116071
1085632049
1144378698
1224817701
1314982a69
14b53102d
1577b76d4
hex51aa431

85632049 has 4 divisors (see below), whose sum is σ = 87623536. Its totient is φ = 83640564.

The previous prime is 85632007. The next prime is 85632083. The reversal of 85632049 is 94023658.

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 85632049 - 211 = 85630001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85631999 and 85632017.

It is not an unprimeable number, because it can be changed into a prime (85632649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995679 + ... + 995764.

It is an arithmetic number, because the mean of its divisors is an integer number (21905884).

Almost surely, 285632049 is an apocalyptic number.

It is an amenable number.

85632049 is a deficient number, since it is larger than the sum of its proper divisors (1991487).

85632049 is a wasteful number, since it uses less digits than its factorization.

85632049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991486.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 85632049 is about 9253.7586417628. The cubic root of 85632049 is about 440.7700856426.

The spelling of 85632049 in words is "eighty-five million, six hundred thirty-two thousand, forty-nine".

Divisors: 1 43 1991443 85632049