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56023143 = 31117372699
BaseRepresentation
bin1101010110110…
…1100001100111
310220102021022020
43111231201213
5103320220033
65320434223
71250121531
oct325554147
9126367266
1056023143
1129695020
1216918973
13b7b6ab7
147624851
154db96b3
hex356d867

56023143 has 32 divisors (see below), whose sum is σ = 88646400. Its totient is φ = 31080960.

The previous prime is 56023139. The next prime is 56023151. The reversal of 56023143 is 34132065.

It is a happy number.

It is not a de Polignac number, because 56023143 - 22 = 56023139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56023133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19408 + ... + 22106.

It is an arithmetic number, because the mean of its divisors is an integer number (2770200).

Almost surely, 256023143 is an apocalyptic number.

56023143 is a deficient number, since it is larger than the sum of its proper divisors (32623257).

56023143 is a wasteful number, since it uses less digits than its factorization.

56023143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 56023143 is about 7484.8609205516. The cubic root of 56023143 is about 382.6389328273.

The spelling of 56023143 in words is "fifty-six million, twenty-three thousand, one hundred forty-three".

Divisors: 1 3 11 17 33 37 51 111 187 407 561 629 1221 1887 2699 6919 8097 20757 29689 45883 89067 99863 137649 299589 504713 1098493 1514139 1697671 3295479 5093013 18674381 56023143