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57120159 = 319040053
BaseRepresentation
bin1101100111100…
…1010110011111
310222111000010110
43121321112133
5104110321114
65400141103
71262341035
oct331712637
9128430113
1057120159
112a274248
1217167793
13baac215
14782c555
155034759
hex367959f

57120159 has 4 divisors (see below), whose sum is σ = 76160216. Its totient is φ = 38080104.

The previous prime is 57120103. The next prime is 57120163. The reversal of 57120159 is 95102175.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57120159 - 28 = 57119903 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 (57120359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9520024 + ... + 9520029.

It is an arithmetic number, because the mean of its divisors is an integer number (19040054).

Almost surely, 257120159 is an apocalyptic number.

57120159 is a deficient number, since it is larger than the sum of its proper divisors (19040057).

57120159 is a wasteful number, since it uses less digits than its factorization.

57120159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19040056.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 57120159 is about 7557.7879700346. The cubic root of 57120159 is about 385.1203514223.

The spelling of 57120159 in words is "fifty-seven million, one hundred twenty thousand, one hundred fifty-nine".

Divisors: 1 3 19040053 57120159