46 is nontrivially palindromic in base 4 and base 5.
46 is an esthetic number in base 4, base 8 and base 14, because in such bases it adjacent digits differ by 1.
It is a semiprime because it is the product of two primes.
46 is an undulating number in base 4 and base 5.
It is a plaindrome in base 6, base 8, base 10, base 12, base 13, base 14 and base 16.
It is a nialpdrome in base 7, base 9, base 11 and base 15.
It is a congruent number.
It is an upside-down number.
46 is the 4-th nonagonal number.
46 is the 6-th centered triangular number.
46 is a wasteful number, since it uses less digits than its factorization.
46 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 25.
The square root of 46 is about 6.7823299831. The cubic root of 46 is about 3.5830478710.