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52078143 = 3137916903
BaseRepresentation
bin1100011010101…
…0011000111111
310121222211210010
43012222120333
5101313000033
65100114303
71201441215
oct306523077
9117884703
1052078143
1127440097
1215535993
13aa35290
146cb8cb5
15488a863
hex31aa63f

52078143 has 16 divisors (see below), whose sum is σ = 75729920. Its totient is φ = 31640544.

The previous prime is 52078111. The next prime is 52078181. The reversal of 52078143 is 34187025.

It is not a de Polignac number, because 52078143 - 25 = 52078111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52078143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52073143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5371 + ... + 11532.

It is an arithmetic number, because the mean of its divisors is an integer number (4733120).

Almost surely, 252078143 is an apocalyptic number.

52078143 is a deficient number, since it is larger than the sum of its proper divisors (23651777).

52078143 is a wasteful number, since it uses less digits than its factorization.

52078143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16998.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 52078143 is about 7216.5187590694. The cubic root of 52078143 is about 373.4379898093.

The spelling of 52078143 in words is "fifty-two million, seventy-eight thousand, one hundred forty-three".

Divisors: 1 3 13 39 79 237 1027 3081 16903 50709 219739 659217 1335337 4006011 17359381 52078143