46000021 has 2 divisors, whose sum is σ = 46000022. Its totient is φ = 46000020.

The previous prime is 46000013. The next prime is 46000037. The reversal of 46000021 is 12000064.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26152996 + 19847025 = 5114^2 + 4455^2 .

It is a cyclic number.

It is not a de Polignac number, because 46000021 - 2³ = 46000013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45999965 and 46000010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23000010 + 23000011.

It is an arithmetic number, because the mean of its divisors is an integer number (23000011).

Almost surely, 2^46000021 is an apocalyptic number.

It is an amenable number.

46000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

46000021 is an equidigital number, since it uses as much as digits as its factorization.

46000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 46000021 is about 6782.3315312656. The cubic root of 46000021 is about 358.3048416262.

Adding to 46000021 its reverse (12000064), we get a palindrome (58000085).

The spelling of 46000021 in words is "forty-six million, twenty-one", and thus it is an aban number and an uban number.