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57512 = 2371379
BaseRepresentation
bin1110000010101000
32220220002
432002220
53320022
61122132
7326450
oct160250
986802
1057512
113a234
1229348
1320240
1416d60
1512092
hexe0a8

57512 has 32 divisors (see below), whose sum is σ = 134400. Its totient is φ = 22464.

The previous prime is 57503. The next prime is 57527. The reversal of 57512 is 21575.

It is an unprimeable number.

57512 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689 + ... + 767.

It is an arithmetic number, because the mean of its divisors is an integer number (4200).

257512 is an apocalyptic number.

57512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67200).

57512 is an abundant number, since it is smaller than the sum of its proper divisors (76888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57512 is a wasteful number, since it uses less digits than its factorization.

57512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 101 counting only the distinct ones).

The product of its digits is 350, while the sum is 20.

The square root of 57512 is about 239.8165965900. The cubic root of 57512 is about 38.5998979836.

Subtracting from 57512 its reverse (21575), we obtain a cube (35937 = 333).

The spelling of 57512 in words is "fifty-seven thousand, five hundred twelve".

Divisors: 1 2 4 7 8 13 14 26 28 52 56 79 91 104 158 182 316 364 553 632 728 1027 1106 2054 2212 4108 4424 7189 8216 14378 28756 57512