Search a number
BaseRepresentation
bin101011110010011100…
…001011001110010101
311111100201001110010112
4223302130023032111
51232242342121422
633333244332405
73253062066116
oct536234131625
9144321043115
1047017145237
1118a37a53127
129141b44105
134583aac3ca
1423c050c20d
151352a8aee2
hexaf270b395

47017145237 has 2 divisors, whose sum is σ = 47017145238. Its totient is φ = 47017145236.

The previous prime is 47017145233. The next prime is 47017145257. The reversal of 47017145237 is 73254171074.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46956289636 + 60855601 = 216694^2 + 7801^2 .

It is a cyclic number.

It is not a de Polignac number, because 47017145237 - 22 = 47017145233 is a prime.

It is a super-2 number, since 2×470171452372 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47017145194 and 47017145203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47017145233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23508572618 + 23508572619.

It is an arithmetic number, because the mean of its divisors is an integer number (23508572619).

Almost surely, 247017145237 is an apocalyptic number.

It is an amenable number.

47017145237 is a deficient number, since it is larger than the sum of its proper divisors (1).

47017145237 is an equidigital number, since it uses as much as digits as its factorization.

47017145237 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 47017145237 in words is "forty-seven billion, seventeen million, one hundred forty-five thousand, two hundred thirty-seven".