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57306071 = 198113719
BaseRepresentation
bin1101101010011…
…0101111010111
310222211110011002
43122212233113
5104132243241
65404133515
71264044044
oct332465727
9128743132
1057306071
112a390999
121723729b
13bb45a24
14787a1cb
15506e89b
hex36a6bd7

57306071 has 8 divisors (see below), whose sum is σ = 60412800. Its totient is φ = 54208440.

The previous prime is 57306013. The next prime is 57306079. The reversal of 57306071 is 17060375.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57306071 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 (57306079) by changing a digit.

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, 13550 + ... + 17268.

It is an arithmetic number, because the mean of its divisors is an integer number (7551600).

Almost surely, 257306071 is an apocalyptic number.

57306071 is a deficient number, since it is larger than the sum of its proper divisors (3106729).

57306071 is a wasteful number, since it uses less digits than its factorization.

57306071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 57306071 is about 7570.0773443869. The cubic root of 57306071 is about 385.5377227888.

The spelling of 57306071 in words is "fifty-seven million, three hundred six thousand, seventy-one".

Divisors: 1 19 811 3719 15409 70661 3016109 57306071