45549109 has 8 divisors (see below), whose sum is σ = 47375360. Its totient is φ = 43754256.

The previous prime is 45549067. The next prime is 45549113. The reversal of 45549109 is 90194554.

45549109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45549109 - 2⁷ = 45548981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45549149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4869 + ... + 10714.

It is an arithmetic number, because the mean of its divisors is an integer number (5921920).

Almost surely, 2^45549109 is an apocalyptic number.

It is an amenable number.

45549109 is a deficient number, since it is larger than the sum of its proper divisors (1826251).

45549109 is a wasteful number, since it uses less digits than its factorization.

45549109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15699.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 45549109 is about 6749.0080011806. The cubic root of 45549109 is about 357.1302425030.

It can be divided in two parts, 4554 and 9109, that multiplied together give a triangular number (41482386 = T₉₁₀₈).

The spelling of 45549109 in words is "forty-five million, five hundred forty-nine thousand, one hundred nine".