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52052161 = 721815869
BaseRepresentation
bin1100011010010…
…0000011000001
310121221112010211
43012210003001
5101311132121
65055354121
71201302400
oct306440301
9117845124
1052052161
1127422617
1215522941
13aa264c5
146cad637
154882ce1
hex31a40c1

52052161 has 12 divisors (see below), whose sum is σ = 60895380. Its totient is φ = 44362080.

The previous prime is 52052149. The next prime is 52052167. The reversal of 52052161 is 16125025.

It can be written as a sum of positive squares in 2 ways, for example, as 2265025 + 49787136 = 1505^2 + 7056^2 .

It is not a de Polignac number, because 52052161 - 213 = 52043969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52052167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5935 + ... + 11803.

It is an arithmetic number, because the mean of its divisors is an integer number (5074615).

Almost surely, 252052161 is an apocalyptic number.

It is an amenable number.

52052161 is a deficient number, since it is larger than the sum of its proper divisors (8843219).

52052161 is a wasteful number, since it uses less digits than its factorization.

52052161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064 (or 6057 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 52052161 is about 7214.7183590214. The cubic root of 52052161 is about 373.3758762283.

Adding to 52052161 its reverse (16125025), we get a palindrome (68177186).

The spelling of 52052161 in words is "fifty-two million, fifty-two thousand, one hundred sixty-one".

Divisors: 1 7 49 181 1267 5869 8869 41083 287581 1062289 7436023 52052161