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52680831 = 372358373
BaseRepresentation
bin1100100011110…
…1100001111111
310200010110111220
43020331201333
5101441241311
65121044423
71206531300
oct310754177
9120113456
1052680831
1127811985
1215786713
13abb66b8
146dd47a7
154959206
hex323d87f

52680831 has 12 divisors (see below), whose sum is σ = 81709272. Its totient is φ = 30103248.

The previous prime is 52680829. The next prime is 52680839. The reversal of 52680831 is 13808625.

It is a happy number.

It is not a de Polignac number, because 52680831 - 21 = 52680829 is a prime.

It is a super-2 number, since 2×526808312 = 5550539909701122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52680792 and 52680801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52680839) 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, 179040 + ... + 179333.

It is an arithmetic number, because the mean of its divisors is an integer number (6809106).

Almost surely, 252680831 is an apocalyptic number.

52680831 is a deficient number, since it is larger than the sum of its proper divisors (29028441).

52680831 is a wasteful number, since it uses less digits than its factorization.

52680831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358390 (or 358383 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 52680831 is about 7258.1561708191. The cubic root of 52680831 is about 374.8730379087.

The spelling of 52680831 in words is "fifty-two million, six hundred eighty thousand, eight hundred thirty-one".

Divisors: 1 3 7 21 49 147 358373 1075119 2508611 7525833 17560277 52680831