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: 161351 = 47 ⋅3433.
It is a cyclic number.
It is an Ulam number.
It is a Duffinian number.
2153161 is an apocalyptic number.
It is an amenable number.
153161 is a wasteful number, since it uses less digits than its factorization.
153161 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1590.
The square root of 153161 is about 391.3578924718. The cubic root of 153161 is about 53.5035663037.
The spelling of 153161 in words is "one hundred fifty-three thousand, one hundred sixty-one".