Number of the day: 54199161

Properties of the number 54199161:

54199161 = 3² × 6022129 is the 50961795^th composite number and is not squarefree.
54199161 has 2 distinct prime factors, 6 divisors, 13 antidivisors and 36132768 totatives.
54199161 has a triangular digit sum 36 in base 10.
54199161 = 27099581² - 27099580² = 9033195² - 9033192² = 3011069² - 3011060² is the difference of 2 nonnegative squares in 3 ways.
54199161 is the sum of 2 positive triangular numbers.
54199161 is the difference of 2 positive pentagonal numbers in 1 way.
54199161 = 2925² + 6756² is the sum of 2 positive squares in 1 way.
54199161 = 89² + 226² + 7358² is the sum of 3 positive squares.
54199161² = 37087911² + 39522600² is the sum of 2 positive squares in 1 way.
54199161² is the sum of 3 positive squares.
54199161 is a proper divisor of 521⁷¹⁶⁹² - 1.
54199161 = '5419' + '9161' is the concatenation of 2 prime numbers.
54199161 = '54199' + '161' is the concatenation of 2 semiprime numbers.