45473809 has 2 divisors, whose sum is σ = 45473810. Its totient is φ = 45473808.

The previous prime is 45473803. The next prime is 45473843. The reversal of 45473809 is 90837454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34398225 + 11075584 = 5865^2 + 3328^2 .

It is a cyclic number.

It is not a de Polignac number, because 45473809 - 2⁹ = 45473297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45473803) 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, 22736904 + 22736905.

It is an arithmetic number, because the mean of its divisors is an integer number (22736905).

Almost surely, 2^45473809 is an apocalyptic number.

It is an amenable number.

45473809 is a deficient number, since it is larger than the sum of its proper divisors (1).

45473809 is an equidigital number, since it uses as much as digits as its factorization.

45473809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 45473809 is about 6743.4270960692. The cubic root of 45473809 is about 356.9333360552.

The spelling of 45473809 in words is "forty-five million, four hundred seventy-three thousand, eight hundred nine".