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47075557 is a prime number
BaseRepresentation
bin1011001110010…
…1000011100101
310021120200112011
42303211003211
544022404212
64400554221
71111064344
oct263450345
9107520464
1047075557
1124633621
1213922971
1399a3279
146375b5b
1541ed4a7
hex2ce50e5

47075557 has 2 divisors, whose sum is σ = 47075558. Its totient is φ = 47075556.

The previous prime is 47075551. The next prime is 47075573. The reversal of 47075557 is 75557074.

47075557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26563716 + 20511841 = 5154^2 + 4529^2 .

It is a cyclic number.

It is not a de Polignac number, because 47075557 - 215 = 47042789 is a prime.

It is a super-2 number, since 2×470755572 = 4432216133720498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47075551) 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 as a sum of consecutive naturals, namely, 23537778 + 23537779.

It is an arithmetic number, because the mean of its divisors is an integer number (23537779).

Almost surely, 247075557 is an apocalyptic number.

It is an amenable number.

47075557 is a deficient number, since it is larger than the sum of its proper divisors (1).

47075557 is an equidigital number, since it uses as much as digits as its factorization.

47075557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 171500, while the sum is 40.

The square root of 47075557 is about 6861.1629480723. The cubic root of 47075557 is about 361.0758889266.

The spelling of 47075557 in words is "forty-seven million, seventy-five thousand, five hundred fifty-seven".