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52210181 = 1131313527
BaseRepresentation
bin1100011100101…
…0101000000101
310122020112220102
43013022220011
5101331211211
65103013445
71202531162
oct307125005
9118215812
1052210181
1127520311
121559a285
13aa803ca
146d11069
1548b4a3b
hex31caa05

52210181 has 8 divisors (see below), whose sum is σ = 53089344. Its totient is φ = 51338560.

The previous prime is 52210163. The next prime is 52210187. The reversal of 52210181 is 18101225.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52210181 - 214 = 52193797 is a prime.

It is a super-2 number, since 2×522101812 = 5451806000105522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52210187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13040 + ... + 16566.

It is an arithmetic number, because the mean of its divisors is an integer number (6636168).

Almost surely, 252210181 is an apocalyptic number.

It is an amenable number.

52210181 is a deficient number, since it is larger than the sum of its proper divisors (879163).

52210181 is a wasteful number, since it uses less digits than its factorization.

52210181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 52210181 is about 7225.6612846161. The cubic root of 52210181 is about 373.7533261450.

The spelling of 52210181 in words is "fifty-two million, two hundred ten thousand, one hundred eighty-one".

Divisors: 1 113 131 3527 14803 398551 462037 52210181