45905549 has 4 divisors (see below), whose sum is σ = 46240764. Its totient is φ = 45570336.

The previous prime is 45905537. The next prime is 45905581. The reversal of 45905549 is 94550954.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11764900 + 34140649 = 3430^2 + 5843^2 .

It is a cyclic number.

It is not a de Polignac number, because 45905549 - 2⁴ = 45905533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45905149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167402 + ... + 167675.

It is an arithmetic number, because the mean of its divisors is an integer number (11560191).

Almost surely, 2^45905549 is an apocalyptic number.

It is an amenable number.

45905549 is a deficient number, since it is larger than the sum of its proper divisors (335215).

45905549 is a wasteful number, since it uses less digits than its factorization.

45905549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335214.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 45905549 is about 6775.3633850887. The cubic root of 45905549 is about 358.0593854025.

The spelling of 45905549 in words is "forty-five million, nine hundred five thousand, five hundred forty-nine".