### Properties of the number 74981:

74981 = 97 × 773 is semiprime and squarefree.74981 has 2 distinct prime factors, 4 divisors, 19 antidivisors and 74112 totatives.

74981 has a prime digit sum 29 in base 10.

74981 has a triangular digit product 2016 in base 10.

Reversing the decimal digits of 74981 results in a prime.

74981 = 37491

^{2}- 37490

^{2}= 435

^{2}- 338

^{2}is the difference of 2 nonnegative squares in 2 ways.

74981 is the difference of 2 positive pentagonal numbers in 2 ways.

74981 = 130

^{2}+ 241

^{2}= 65

^{2}+ 266

^{2}is the sum of 2 positive squares in 2 ways.

74981 = 6

^{2}+ 31

^{2}+ 272

^{2}is the sum of 3 positive squares.

74981

^{2}= 50245

^{2}+ 55656

^{2}= 34580

^{2}+ 66531

^{2}= 41181

^{2}+ 62660

^{2}= 18915

^{2}+ 72556

^{2}is the sum of 2 positive squares in 4 ways.

74981

^{2}is the sum of 3 positive squares.

74981 is a divisor of 1229

^{48}- 1.

74981 is an emirpimes in (at least) the following bases: 5, 13, 14, 15, 16, 19, 20, 34, 35, 36, 41, 43, 44, 45, 46, 47, 52, 54, 61, 67, 69, 71, 74, 75, 80, 81, 83, 88, 89, 91, 93, 99, and 100.

74981 is palindromic in (at least) the following bases: -20, and -85.

74981 in base 49 = VBB and consists of only the digits 'B' and 'V'.

## No comments:

## Post a Comment