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: 15947 = 37 ⋅431.
It is a cyclic number.
It is a Duffinian number.
It is a plaindrome in base 6.
It is a self number, because there is not a number n which added to its sum of digits gives 74951.
It is a congruent number.
274951 is an apocalyptic number.
74951 is a wasteful number, since it uses less digits than its factorization.
74951 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 552.
The square root of 74951 is about 273.7718027847. The cubic root of 74951 is about 42.1624472197.
The spelling of 74951 in words is "seventy-four thousand, nine hundred fifty-one".