45489149 has 2 divisors, whose sum is σ = 45489150. Its totient is φ = 45489148.

The previous prime is 45489107. The next prime is 45489233. The reversal of 45489149 is 94198454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45292900 + 196249 = 6730^2 + 443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45489149 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45489949) 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, 22744574 + 22744575.

It is an arithmetic number, because the mean of its divisors is an integer number (22744575).

Almost surely, 2^45489149 is an apocalyptic number.

It is an amenable number.

45489149 is a deficient number, since it is larger than the sum of its proper divisors (1).

45489149 is an equidigital number, since it uses as much as digits as its factorization.

45489149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 45489149 is about 6744.5644040220. The cubic root of 45489149 is about 356.9734671543.

The spelling of 45489149 in words is "forty-five million, four hundred eighty-nine thousand, one hundred forty-nine".