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50020517 = 79762761
BaseRepresentation
bin1011111011010…
…0000010100101
310111010022020202
42332310002211
5100301124032
64544040245
71145111261
oct276640245
9114108222
1050020517
1126265178
1214903085
13a494851
1469010a1
1545d0d62
hex2fb40a5

50020517 has 4 divisors (see below), whose sum is σ = 50084076. Its totient is φ = 49956960.

The previous prime is 50020507. The next prime is 50020541. The reversal of 50020517 is 71502005.

50020517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71502005 = 514300401.

It can be written as a sum of positive squares in 2 ways, for example, as 14032516 + 35988001 = 3746^2 + 5999^2 .

It is a cyclic number.

It is not a de Polignac number, because 50020517 - 24 = 50020501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50020507) 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, 30584 + ... + 32177.

It is an arithmetic number, because the mean of its divisors is an integer number (12521019).

Almost surely, 250020517 is an apocalyptic number.

It is an amenable number.

50020517 is a deficient number, since it is larger than the sum of its proper divisors (63559).

50020517 is an equidigital number, since it uses as much as digits as its factorization.

50020517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63558.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 50020517 is about 7072.5184340516. The cubic root of 50020517 is about 368.4535331561.

The spelling of 50020517 in words is "fifty million, twenty thousand, five hundred seventeen".

Divisors: 1 797 62761 50020517