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144377 = 353409
BaseRepresentation
bin100011001111111001
321100001022
4203033321
514110002
63032225
71140632
oct431771
9240038
10144377
1199522
126b675
135093c
143a889
152cba2
hex233f9

144377 has 4 divisors (see below), whose sum is σ = 145140. Its totient is φ = 143616.

The previous prime is 144349. The next prime is 144379. The reversal of 144377 is 773441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 773441 = 4317987.

It can be written as a sum of positive squares in 2 ways, for example, as 99856 + 44521 = 316^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 144377 - 212 = 140281 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (144379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149 + ... + 557.

It is an arithmetic number, because the mean of its divisors is an integer number (36285).

2144377 is an apocalyptic number.

It is an amenable number.

144377 is a deficient number, since it is larger than the sum of its proper divisors (763).

144377 is an equidigital number, since it uses as much as digits as its factorization.

144377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762.

The product of its digits is 2352, while the sum is 26.

The square root of 144377 is about 379.9697356369. The cubic root of 144377 is about 52.4605296679.

It can be divided in two parts, 1443 and 77, that multiplied together give a palindrome (111111).

The spelling of 144377 in words is "one hundred forty-four thousand, three hundred seventy-seven", and thus it is an iban number.

Divisors: 1 353 409 144377