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57505123 = 132340267
BaseRepresentation
bin1101101101011…
…1010101100011
311000012120012101
43123113111203
5104210130443
65412311231
71265533264
oct333272543
9130176171
1057505123
112a5074a5
1217312517
13bbb5500
1478cc96b
1550ad84d
hex36d7563

57505123 has 6 divisors (see below), whose sum is σ = 62269044. Its totient is φ = 53081496.

The previous prime is 57505121. The next prime is 57505157. The reversal of 57505123 is 32150575.

It is not a de Polignac number, because 57505123 - 21 = 57505121 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 57505091 and 57505100.

It is not an unprimeable number, because it can be changed into a prime (57505121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169965 + ... + 170302.

It is an arithmetic number, because the mean of its divisors is an integer number (10378174).

Almost surely, 257505123 is an apocalyptic number.

57505123 is a deficient number, since it is larger than the sum of its proper divisors (4763921).

57505123 is a wasteful number, since it uses less digits than its factorization.

57505123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340293 (or 340280 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 57505123 is about 7583.2132371443. The cubic root of 57505123 is about 385.9835939406.

Adding to 57505123 its reverse (32150575), we get a palindrome (89655698).

The spelling of 57505123 in words is "fifty-seven million, five hundred five thousand, one hundred twenty-three".

Divisors: 1 13 169 340267 4423471 57505123