43149061 has 2 divisors, whose sum is σ = 43149062. Its totient is φ = 43149060.

The previous prime is 43149053. The next prime is 43149079. The reversal of 43149061 is 16094134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39125025 + 4024036 = 6255^2 + 2006^2 .

It is a cyclic number.

It is not a de Polignac number, because 43149061 - 2³ = 43149053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43149011) 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, 21574530 + 21574531.

It is an arithmetic number, because the mean of its divisors is an integer number (21574531).

Almost surely, 2^43149061 is an apocalyptic number.

It is an amenable number.

43149061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43149061 is an equidigital number, since it uses as much as digits as its factorization.

43149061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 43149061 is about 6568.7944860530. The cubic root of 43149061 is about 350.7441608809.

The spelling of 43149061 in words is "forty-three million, one hundred forty-nine thousand, sixty-one".