45331409 has 2 divisors, whose sum is σ = 45331410. Its totient is φ = 45331408.

The previous prime is 45331399. The next prime is 45331423. The reversal of 45331409 is 90413354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 20729809 = 4960^2 + 4553^2 .

It is a cyclic number.

It is not a de Polignac number, because 45331409 - 2¹⁶ = 45265873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45331439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22665704 + 22665705.

It is an arithmetic number, because the mean of its divisors is an integer number (22665705).

Almost surely, 2^45331409 is an apocalyptic number.

It is an amenable number.

45331409 is a deficient number, since it is larger than the sum of its proper divisors (1).

45331409 is an equidigital number, since it uses as much as digits as its factorization.

45331409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 45331409 is about 6732.8603876807. The cubic root of 45331409 is about 356.5603707854.

The spelling of 45331409 in words is "forty-five million, three hundred thirty-one thousand, four hundred nine".