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57026143 = 1731241449
BaseRepresentation
bin1101100110001…
…0011001011111
310222022020011101
43121202121133
5104044314033
65354133531
71261466656
oct331423137
9128266141
1057026143
112a20a649
12171212a7
13ba784a5
14780619d
15501697d
hex366265f

57026143 has 16 divisors (see below), whose sum is σ = 62726400. Its totient is φ = 51609600.

The previous prime is 57026141. The next prime is 57026149. The reversal of 57026143 is 34162075.

It is a cyclic number.

It is not a de Polignac number, because 57026143 - 21 = 57026141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57026141) 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, 126783 + ... + 127231.

It is an arithmetic number, because the mean of its divisors is an integer number (3920400).

Almost surely, 257026143 is an apocalyptic number.

57026143 is a deficient number, since it is larger than the sum of its proper divisors (5700257).

57026143 is a wasteful number, since it uses less digits than its factorization.

57026143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 57026143 is about 7551.5655992648. The cubic root of 57026143 is about 384.9089411904.

The spelling of 57026143 in words is "fifty-seven million, twenty-six thousand, one hundred forty-three".