46 has 4 divisors (see below), whose sum is σ = 72. Its totient is φ = 22.

The previous prime is 43. The next prime is 47. The reversal of 46 is 64.

Subtracting from 46 its sum of digits (10), we obtain a triangular number (36 = T_{8}).

Subtracting from 46 its product of digits (24), we obtain a palindrome (22).

46 = T_{4} + T_{5} +
T_{6}.

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 its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is a pancake number, because a pancake can be divided into 46 parts by 9 straight cuts.

46 is an undulating number in base 4 and base 5.

46 is a modest number, since divided by 6 gives 4 as remainder.

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.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10 + ... + 13.

It is an arithmetic number, because the mean of its divisors is an integer number (18).

46 is the 4-th nonagonal number.

46 is the 6-th centered triangular number.

46 is a deficient number, since it is larger than the sum of its proper divisors (26).

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 product of its digits is 24, while the sum is 10.

The square root of 46 is about 6.7823299831. The cubic root of 46 is about 3.5830478710.

The spelling of 46 in words is "forty-six", and thus it is an aban number, an eban number, and an uban number.

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