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57379287 = 374615927
BaseRepresentation
bin1101101011100…
…0100111010111
310222222011120210
43122320213113
5104142114122
65405500503
71264500360
oct332704727
9128864523
1057379287
112a4309a9
1217271733
13bb70154
147898b67
15508640c
hex36b89d7

57379287 has 16 divisors (see below), whose sum is σ = 87639552. Its totient is φ = 32711520.

The previous prime is 57379277. The next prime is 57379291. The reversal of 57379287 is 78297375.

It is not a de Polignac number, because 57379287 - 210 = 57378263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57379207) 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, 6718 + ... + 12644.

It is an arithmetic number, because the mean of its divisors is an integer number (5477472).

Almost surely, 257379287 is an apocalyptic number.

57379287 is a deficient number, since it is larger than the sum of its proper divisors (30260265).

57379287 is a wasteful number, since it uses less digits than its factorization.

57379287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398.

The product of its digits is 740880, while the sum is 48.

The square root of 57379287 is about 7574.9116826535. The cubic root of 57379287 is about 385.7018445331.

The spelling of 57379287 in words is "fifty-seven million, three hundred seventy-nine thousand, two hundred eighty-seven".

Divisors: 1 3 7 21 461 1383 3227 5927 9681 17781 41489 124467 2732347 8197041 19126429 57379287