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47105011 = 172770883
BaseRepresentation
bin1011001110110…
…0001111110011
310021122011221001
42303230033303
544024330021
64401342431
71111246252
oct263541763
9107564831
1047105011
1124653768
1213937a17
1399b37b5
146382799
154207091
hex2cec3f3

47105011 has 4 divisors (see below), whose sum is σ = 49875912. Its totient is φ = 44334112.

The previous prime is 47104999. The next prime is 47105017. The reversal of 47105011 is 11050174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11050174 = 25525087.

It is a cyclic number.

It is not a de Polignac number, because 47105011 - 25 = 47104979 is a prime.

It is a super-2 number, since 2×471050112 = 4437764122620242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47105011.

It is not an unprimeable number, because it can be changed into a prime (47105017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385425 + ... + 1385458.

It is an arithmetic number, because the mean of its divisors is an integer number (12468978).

Almost surely, 247105011 is an apocalyptic number.

47105011 is a deficient number, since it is larger than the sum of its proper divisors (2770901).

47105011 is a wasteful number, since it uses less digits than its factorization.

47105011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770900.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 47105011 is about 6863.3090415630. The cubic root of 47105011 is about 361.1511786144.

Adding to 47105011 its reverse (11050174), we get a palindrome (58155185).

The spelling of 47105011 in words is "forty-seven million, one hundred five thousand, eleven".

Divisors: 1 17 2770883 47105011