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57145714 = 2731372857
BaseRepresentation
bin1101100111111…
…1100101110010
310222112022011221
43121333211302
5104112130324
65400455254
71262505403
oct331774562
9128468157
1057145714
112a29146a
121717a52a
13babaa42
1478379aa
15503c0e4
hex367f972

57145714 has 16 divisors (see below), whose sum is σ = 87557688. Its totient is φ = 27965952.

The previous prime is 57145709. The next prime is 57145729. The reversal of 57145714 is 41754175.

It can be written as a sum of positive squares in 4 ways, for example, as 54272689 + 2873025 = 7367^2 + 1695^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57145714.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18574 + ... + 21430.

Almost surely, 257145714 is an apocalyptic number.

57145714 is a deficient number, since it is larger than the sum of its proper divisors (30411974).

57145714 is a wasteful number, since it uses less digits than its factorization.

57145714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069.

The product of its digits is 19600, while the sum is 34.

The square root of 57145714 is about 7559.4784211611. The cubic root of 57145714 is about 385.1777758845.

Adding to 57145714 its reverse (41754175), we get a palindrome (98899889).

The spelling of 57145714 in words is "fifty-seven million, one hundred forty-five thousand, seven hundred fourteen".

Divisors: 1 2 73 137 146 274 2857 5714 10001 20002 208561 391409 417122 782818 28572857 57145714