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253143 = 32112557
BaseRepresentation
bin111101110011010111
3110212020200
4331303113
531100033
65231543
72103012
oct756327
9425220
10253143
11163210
121025b3
138b2b7
1468379
1550013
hex3dcd7

253143 has 12 divisors (see below), whose sum is σ = 399048. Its totient is φ = 153360.

The previous prime is 253133. The next prime is 253153. The reversal of 253143 is 341352.

253143 is nontrivially palindromic in base 7.

It is an interprime number because it is at equal distance from previous prime (253133) and next prime (253153).

It is not a de Polignac number, because 253143 - 28 = 252887 is a prime.

253143 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253143.

It is not an unprimeable number, because it can be changed into a prime (253103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1180 + ... + 1377.

It is an arithmetic number, because the mean of its divisors is an integer number (33254).

2253143 is an apocalyptic number.

253143 is a deficient number, since it is larger than the sum of its proper divisors (145905).

253143 is a wasteful number, since it uses less digits than its factorization.

253143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2571 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 253143 is about 503.1331831633. The cubic root of 253143 is about 63.2589492979.

Adding to 253143 its reverse (341352), we get a palindrome (594495).

Subtracting 253143 from its reverse (341352), we obtain a square (88209 = 2972).

The spelling of 253143 in words is "two hundred fifty-three thousand, one hundred forty-three".

Divisors: 1 3 9 11 33 99 2557 7671 23013 28127 84381 253143