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53086578 = 2379111997
BaseRepresentation
bin1100101010000…
…0100101110010
310200220002002120
43022200211302
5102042232303
65133455110
71213141236
oct312404562
9120802076
1053086578
1127a69806
1215941496
13acc929c
14709c5c6
1549d9553
hex32a0972

53086578 has 16 divisors (see below), whose sum is σ = 107518080. Its totient is φ = 17471376.

The previous prime is 53086577. The next prime is 53086591. The reversal of 53086578 is 87568035.

It is not an unprimeable number, because it can be changed into a prime (53086573) 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, 55525 + ... + 56472.

It is an arithmetic number, because the mean of its divisors is an integer number (6719880).

Almost surely, 253086578 is an apocalyptic number.

53086578 is an abundant number, since it is smaller than the sum of its proper divisors (54431502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53086578 is a wasteful number, since it uses less digits than its factorization.

53086578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112081.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 53086578 is about 7286.0536643645. The cubic root of 53086578 is about 375.8329998156.

The spelling of 53086578 in words is "fifty-three million, eighty-six thousand, five hundred seventy-eight".

Divisors: 1 2 3 6 79 158 237 474 111997 223994 335991 671982 8847763 17695526 26543289 53086578