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80137033 = 194941117
BaseRepresentation
bin1001100011011…
…00101101001001
312120210101100021
410301230231021
5131003341113
611541340441
71662103444
oct461545511
9176711307
1080137033
1141265159
1222a07721
13137aa882
14a90065b
15707e48d
hex4c6cb49

80137033 has 4 divisors (see below), whose sum is σ = 80180100. Its totient is φ = 80093968.

The previous prime is 80137027. The next prime is 80137049. The reversal of 80137033 is 33073108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60093504 + 20043529 = 7752^2 + 4477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80137033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80136989 and 80137007.

It is not an unprimeable number, because it can be changed into a prime (80137093) 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, 18610 + ... + 22507.

It is an arithmetic number, because the mean of its divisors is an integer number (20045025).

Almost surely, 280137033 is an apocalyptic number.

It is an amenable number.

80137033 is a deficient number, since it is larger than the sum of its proper divisors (43067).

80137033 is a wasteful number, since it uses less digits than its factorization.

80137033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43066.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 80137033 is about 8951.9290099956. The cubic root of 80137033 is about 431.1328215415.

The spelling of 80137033 in words is "eighty million, one hundred thirty-seven thousand, thirty-three".

Divisors: 1 1949 41117 80137033