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57347087 = 78192441
BaseRepresentation
bin1101101011000…
…0110000001111
310222220112102012
43122300300033
5104140101322
65405051435
71264304450
oct332606017
9128815365
1057347087
112a409796
1217256b7b
13bb5b5b5
14788b127
15507bae2
hex36b0c0f

57347087 has 4 divisors (see below), whose sum is σ = 65539536. Its totient is φ = 49154640.

The previous prime is 57347083. The next prime is 57347089. The reversal of 57347087 is 78074375.

57347087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57347087 - 22 = 57347083 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 (57347083) 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 3 ways as a sum of consecutive naturals, for example, 4096214 + ... + 4096227.

It is an arithmetic number, because the mean of its divisors is an integer number (16384884).

Almost surely, 257347087 is an apocalyptic number.

57347087 is a deficient number, since it is larger than the sum of its proper divisors (8192449).

57347087 is an equidigital number, since it uses as much as digits as its factorization.

57347087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192448.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 57347087 is about 7572.7859470607. The cubic root of 57347087 is about 385.6296818883.

It can be divided in two parts, 5734 and 7087, that added together give a palindrome (12821).

The spelling of 57347087 in words is "fifty-seven million, three hundred forty-seven thousand, eighty-seven".

Divisors: 1 7 8192441 57347087