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52808487 = 378722367
BaseRepresentation
bin1100100101110…
…0101100100111
310200100221121220
43021130230213
5102004332422
65123511423
71210602414
oct311345447
9120327556
1052808487
1127899886
1215828573
13ac2c834
14702910b
154981e5c
hex325cb27

52808487 has 8 divisors (see below), whose sum is σ = 70503936. Its totient is φ = 35159352.

The previous prime is 52808479. The next prime is 52808489. The reversal of 52808487 is 78480825.

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

It is not a de Polignac number, because 52808487 - 23 = 52808479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52808489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8823 + ... + 13544.

It is an arithmetic number, because the mean of its divisors is an integer number (8812992).

Almost surely, 252808487 is an apocalyptic number.

52808487 is a deficient number, since it is larger than the sum of its proper divisors (17695449).

52808487 is a wasteful number, since it uses less digits than its factorization.

52808487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23157.

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 52808487 is about 7266.9448188355. The cubic root of 52808487 is about 375.1755906572.

The spelling of 52808487 in words is "fifty-two million, eight hundred eight thousand, four hundred eighty-seven".

Divisors: 1 3 787 2361 22367 67101 17602829 52808487