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57385237 = 713630607
BaseRepresentation
bin1101101011101…
…0000100010101
310222222110202011
43122322010111
5104142311422
65405544221
71264523620
oct332720425
9128873664
1057385237
112a435418
1217275071
13bb72a80
14789adb7
155088077
hex36ba115

57385237 has 8 divisors (see below), whose sum is σ = 70628096. Its totient is φ = 45403632.

The previous prime is 57385219. The next prime is 57385241. The reversal of 57385237 is 73258375.

57385237 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 a cyclic number.

It is not a de Polignac number, because 57385237 - 27 = 57385109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57385237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57385267) 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, 315213 + ... + 315394.

It is an arithmetic number, because the mean of its divisors is an integer number (8828512).

Almost surely, 257385237 is an apocalyptic number.

It is an amenable number.

57385237 is a deficient number, since it is larger than the sum of its proper divisors (13242859).

57385237 is a wasteful number, since it uses less digits than its factorization.

57385237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630627.

The product of its digits is 176400, while the sum is 40.

The square root of 57385237 is about 7575.3044163255. The cubic root of 57385237 is about 385.7151759794.

The spelling of 57385237 in words is "fifty-seven million, three hundred eighty-five thousand, two hundred thirty-seven".

Divisors: 1 7 13 91 630607 4414249 8197891 57385237