46621921 has 2 divisors, whose sum is σ = 46621922. Its totient is φ = 46621920.

The previous prime is 46621909. The next prime is 46621931. The reversal of 46621921 is 12912664.

46621921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40144896 + 6477025 = 6336^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 46621921 - 2⁵ = 46621889 is a prime.

It is not a weakly prime, because it can be changed into another prime (46621901) 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 as a sum of consecutive naturals, namely, 23310960 + 23310961.

It is an arithmetic number, because the mean of its divisors is an integer number (23310961).

Almost surely, 2^46621921 is an apocalyptic number.

It is an amenable number.

46621921 is a deficient number, since it is larger than the sum of its proper divisors (1).

46621921 is an equidigital number, since it uses as much as digits as its factorization.

46621921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 46621921 is about 6828.0246777527. The cubic root of 46621921 is about 359.9123269012.

The spelling of 46621921 in words is "forty-six million, six hundred twenty-one thousand, nine hundred twenty-one".