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57047065 = 5103110771
BaseRepresentation
bin1101100110011…
…1100000011001
310222100021212021
43121213200121
5104101001230
65354414441
71261614655
oct331474031
9128307767
1057047065
112a224339
1217131421
13ba84b7a
14780da65
15501cc7a
hex3667819

57047065 has 8 divisors (see below), whose sum is σ = 69121728. Its totient is φ = 45194160.

The previous prime is 57047059. The next prime is 57047069. The reversal of 57047065 is 56074075.

57047065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 57047065 - 23 = 57047057 is a prime.

It is a super-2 number, since 2×570470652 = 6508735250228450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57047065.

It is not an unprimeable number, because it can be changed into a prime (57047069) 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 7 ways as a sum of consecutive naturals, for example, 54871 + ... + 55900.

It is an arithmetic number, because the mean of its divisors is an integer number (8640216).

Almost surely, 257047065 is an apocalyptic number.

It is an amenable number.

57047065 is a deficient number, since it is larger than the sum of its proper divisors (12074663).

57047065 is a wasteful number, since it uses less digits than its factorization.

57047065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110879.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 57047065 is about 7552.9507478866. The cubic root of 57047065 is about 384.9560077918.

It can be divided in two parts, 5704 and 7065, that added together give a square (12769 = 1132).

The spelling of 57047065 in words is "fifty-seven million, forty-seven thousand, sixty-five".

Divisors: 1 5 103 515 110771 553855 11409413 57047065