45151621 has 2 divisors, whose sum is σ = 45151622. Its totient is φ = 45151620.

The previous prime is 45151607. The next prime is 45151627. The reversal of 45151621 is 12615154.

It is a happy number.

45151621 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., 43230625 + 1920996 = 6575^2 + 1386^2 .

It is a cyclic number.

It is not a de Polignac number, because 45151621 - 2⁷ = 45151493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45151627) 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, 22575810 + 22575811.

It is an arithmetic number, because the mean of its divisors is an integer number (22575811).

Almost surely, 2^45151621 is an apocalyptic number.

It is an amenable number.

45151621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45151621 is an equidigital number, since it uses as much as digits as its factorization.

45151621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 25.

The square root of 45151621 is about 6719.4955911884. The cubic root of 45151621 is about 356.0883638960.

Adding to 45151621 its reverse (12615154), we get a palindrome (57766775).

The spelling of 45151621 in words is "forty-five million, one hundred fifty-one thousand, six hundred twenty-one".