45581329 has 2 divisors, whose sum is σ = 45581330. Its totient is φ = 45581328.

The previous prime is 45581321. The next prime is 45581383. The reversal of 45581329 is 92318554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41254929 + 4326400 = 6423^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 45581329 - 2³ = 45581321 is a prime.

It is not a weakly prime, because it can be changed into another prime (45581321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22790664 + 22790665.

It is an arithmetic number, because the mean of its divisors is an integer number (22790665).

Almost surely, 2^45581329 is an apocalyptic number.

It is an amenable number.

45581329 is a deficient number, since it is larger than the sum of its proper divisors (1).

45581329 is an equidigital number, since it uses as much as digits as its factorization.

45581329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The square root of 45581329 is about 6751.3945966741. The cubic root of 45581329 is about 357.2144302040.

The spelling of 45581329 in words is "forty-five million, five hundred eighty-one thousand, three hundred twenty-nine".