It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73527 = 3 ⋅24509.
It is a cyclic number.
It is a D-number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 72537.
272537 is an apocalyptic number.
It is an amenable number.
72537 is a wasteful number, since it uses less digits than its factorization.
72537 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24182.
The square root of 72537 is about 269.3269388680. The cubic root of 72537 is about 41.7048467818.
Subtracting 72537 from its reverse (73527), we obtain a triangular number (990 = T44).
The spelling of 72537 in words is "seventy-two thousand, five hundred thirty-seven".