45421147 has 2 divisors, whose sum is σ = 45421148. Its totient is φ = 45421146.

The previous prime is 45421139. The next prime is 45421183. The reversal of 45421147 is 74112454.

45421147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45421147 - 2³ = 45421139 is a prime.

It is not a weakly prime, because it can be changed into another prime (45421547) 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, 22710573 + 22710574.

It is an arithmetic number, because the mean of its divisors is an integer number (22710574).

Almost surely, 2^45421147 is an apocalyptic number.

45421147 is a deficient number, since it is larger than the sum of its proper divisors (1).

45421147 is an equidigital number, since it uses as much as digits as its factorization.

45421147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 28.

The square root of 45421147 is about 6739.5212737998. The cubic root of 45421147 is about 356.7954978544.

The spelling of 45421147 in words is "forty-five million, four hundred twenty-one thousand, one hundred forty-seven".