45543649 has 2 divisors, whose sum is σ = 45543650. Its totient is φ = 45543648.

The previous prime is 45543643. The next prime is 45543653. The reversal of 45543649 is 94634554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 5094049 = 6360^2 + 2257^2 .

It is a cyclic number.

It is not a de Polignac number, because 45543649 - 2¹⁹ = 45019361 is a prime.

It is not a weakly prime, because it can be changed into another prime (45543643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22771824 + 22771825.

It is an arithmetic number, because the mean of its divisors is an integer number (22771825).

Almost surely, 2^45543649 is an apocalyptic number.

It is an amenable number.

45543649 is a deficient number, since it is larger than the sum of its proper divisors (1).

45543649 is an equidigital number, since it uses as much as digits as its factorization.

45543649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 40.

The square root of 45543649 is about 6748.6034851664. The cubic root of 45543649 is about 357.1159721248.

The spelling of 45543649 in words is "forty-five million, five hundred forty-three thousand, six hundred forty-nine".