46643521 has 4 divisors (see below), whose sum is σ = 47300544. Its totient is φ = 45986500.

The previous prime is 46643503. The next prime is 46643533. The reversal of 46643521 is 12534664.

46643521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 46643521 - 2¹¹ = 46641473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46643321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328405 + ... + 328546.

It is an arithmetic number, because the mean of its divisors is an integer number (11825136).

Almost surely, 2^46643521 is an apocalyptic number.

It is an amenable number.

46643521 is a deficient number, since it is larger than the sum of its proper divisors (657023).

46643521 is an equidigital number, since it uses as much as digits as its factorization.

46643521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657022.

The product of its digits is 17280, while the sum is 31.

The square root of 46643521 is about 6829.6062111955. The cubic root of 46643521 is about 359.9679009446.

The spelling of 46643521 in words is "forty-six million, six hundred forty-three thousand, five hundred twenty-one".