Adding to 155404 its reverse (404551), we get a palindrome (559955).
155404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an Ulam number.
It is an unprimeable number.
2155404 is an apocalyptic number.
It is an amenable number.
155404 is a wasteful number, since it uses less digits than its factorization.
155404 is an odious number, because the sum of its binary digits is odd.
The square root of 155404 is about 394.2131403188. The cubic root of 155404 is about 53.7634831868.
The spelling of 155404 in words is "one hundred fifty-five thousand, four hundred four".