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57012841 = 385314797
BaseRepresentation
bin1101100101111…
…1001001101001
310222021112220201
43121133021221
5104043402331
65353552201
71261413124
oct331371151
9128245821
1057012841
112a200656
1217115661
13ba72412
1478013bb
155012a61
hex365f269

57012841 has 4 divisors (see below), whose sum is σ = 57031492. Its totient is φ = 56994192.

The previous prime is 57012829. The next prime is 57012847. The reversal of 57012841 is 14821075.

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 43507216 + 13505625 = 6596^2 + 3675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57012841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57012847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3546 + ... + 11251.

It is an arithmetic number, because the mean of its divisors is an integer number (14257873).

Almost surely, 257012841 is an apocalyptic number.

It is an amenable number.

57012841 is a deficient number, since it is larger than the sum of its proper divisors (18651).

57012841 is a wasteful number, since it uses less digits than its factorization.

57012841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18650.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 57012841 is about 7550.6848033804. The cubic root of 57012841 is about 384.8790107256.

The spelling of 57012841 in words is "fifty-seven million, twelve thousand, eight hundred forty-one".

Divisors: 1 3853 14797 57012841