45874921 has 2 divisors, whose sum is σ = 45874922. Its totient is φ = 45874920.

The previous prime is 45874909. The next prime is 45874943. The reversal of 45874921 is 12947854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27931225 + 17943696 = 5285^2 + 4236^2 .

It is a cyclic number.

It is not a de Polignac number, because 45874921 - 2⁷ = 45874793 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (45874901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22937460 + 22937461.

It is an arithmetic number, because the mean of its divisors is an integer number (22937461).

Almost surely, 2^45874921 is an apocalyptic number.

It is an amenable number.

45874921 is a deficient number, since it is larger than the sum of its proper divisors (1).

45874921 is an equidigital number, since it uses as much as digits as its factorization.

45874921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 45874921 is about 6773.1027601831. The cubic root of 45874921 is about 357.9797357526.

The spelling of 45874921 in words is "forty-five million, eight hundred seventy-four thousand, nine hundred twenty-one".