45447091 has 2 divisors, whose sum is σ = 45447092. Its totient is φ = 45447090.

The previous prime is 45447053. The next prime is 45447097. The reversal of 45447091 is 19074454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45447091 - 2⁷ = 45446963 is a prime.

It is not a weakly prime, because it can be changed into another prime (45447097) 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, 22723545 + 22723546.

It is an arithmetic number, because the mean of its divisors is an integer number (22723546).

Almost surely, 2^45447091 is an apocalyptic number.

45447091 is a deficient number, since it is larger than the sum of its proper divisors (1).

45447091 is an equidigital number, since it uses as much as digits as its factorization.

45447091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 45447091 is about 6741.4457648193. The cubic root of 45447091 is about 356.8634173231.

The spelling of 45447091 in words is "forty-five million, four hundred forty-seven thousand, ninety-one".