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245041 = 317773
BaseRepresentation
bin111011110100110001
3110110010121
4323310301
530320131
65130241
72040256
oct736461
9413117
10245041
11158115
12b9981
13876c4
146542d
154c911
hex3bd31

245041 has 4 divisors (see below), whose sum is σ = 246132. Its totient is φ = 243952.

The previous prime is 245039. The next prime is 245071. The reversal of 245041 is 140542.

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: 140542 = 270271.

It can be written as a sum of positive squares in 2 ways, for example, as 14641 + 230400 = 121^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 245041 - 21 = 245039 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245071) 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, 70 + ... + 703.

It is an arithmetic number, because the mean of its divisors is an integer number (61533).

2245041 is an apocalyptic number.

It is an amenable number.

245041 is a deficient number, since it is larger than the sum of its proper divisors (1091).

245041 is an equidigital number, since it uses as much as digits as its factorization.

245041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 245041 is about 495.0161613523. The cubic root of 245041 is about 62.5767377425.

Subtracting from 245041 its sum of digits (16), we obtain a square (245025 = 4952).

Adding to 245041 its reverse (140542), we get a palindrome (385583).

The spelling of 245041 in words is "two hundred forty-five thousand, forty-one".

Divisors: 1 317 773 245041