45830021 has 2 divisors, whose sum is σ = 45830022. Its totient is φ = 45830020.

The previous prime is 45830009. The next prime is 45830023. The reversal of 45830021 is 12003854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42902500 + 2927521 = 6550^2 + 1711^2 .

It is a cyclic number.

It is not a de Polignac number, because 45830021 - 2¹⁰ = 45828997 is a prime.

Together with 45830023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45830023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22915010 + 22915011.

It is an arithmetic number, because the mean of its divisors is an integer number (22915011).

Almost surely, 2^45830021 is an apocalyptic number.

It is an amenable number.

45830021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45830021 is an equidigital number, since it uses as much as digits as its factorization.

45830021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 45830021 is about 6769.7873674141. The cubic root of 45830021 is about 357.8629069455.

Adding to 45830021 its reverse (12003854), we get a palindrome (57833875).

The spelling of 45830021 in words is "forty-five million, eight hundred thirty thousand, twenty-one".