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52127161 = 57191291
BaseRepresentation
bin1100011011011…
…0010110111001
310122002100000121
43012312112321
5101321032121
65101133241
71202034142
oct306662671
9118070017
1052127161
11274739a9
121555a221
13aa51698
146cccac9
15489a141
hex31b65b9

52127161 has 4 divisors (see below), whose sum is σ = 52219024. Its totient is φ = 52035300.

The previous prime is 52127111. The next prime is 52127171. The reversal of 52127161 is 16172125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52127161 - 223 = 43738553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52127111) 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, 45075 + ... + 46216.

It is an arithmetic number, because the mean of its divisors is an integer number (13054756).

Almost surely, 252127161 is an apocalyptic number.

It is an amenable number.

52127161 is a deficient number, since it is larger than the sum of its proper divisors (91863).

52127161 is an equidigital number, since it uses as much as digits as its factorization.

52127161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91862.

The product of its digits is 840, while the sum is 25.

The square root of 52127161 is about 7219.9141961660. The cubic root of 52127161 is about 373.5551179181. Note that the first 3 decimals are identical.

Adding to 52127161 its reverse (16172125), we get a palindrome (68299286).

The spelling of 52127161 in words is "fifty-two million, one hundred twenty-seven thousand, one hundred sixty-one".

Divisors: 1 571 91291 52127161