45120349 has 4 divisors (see below), whose sum is σ = 45160636. Its totient is φ = 45080064.

The previous prime is 45120347. The next prime is 45120359. The reversal of 45120349 is 94302154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94302154 = 2 ⋅47151077.

It can be written as a sum of positive squares in 2 ways, for example, as 40411449 + 4708900 = 6357^2 + 2170^2 .

It is a cyclic number.

It is not a de Polignac number, because 45120349 - 2¹ = 45120347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45120347) 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, 18414 + ... + 20719.

It is an arithmetic number, because the mean of its divisors is an integer number (11290159).

Almost surely, 2^45120349 is an apocalyptic number.

It is an amenable number.

45120349 is a deficient number, since it is larger than the sum of its proper divisors (40287).

45120349 is a wasteful number, since it uses less digits than its factorization.

45120349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40286.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 45120349 is about 6717.1682277579. The cubic root of 45120349 is about 356.0061360092.

The spelling of 45120349 in words is "forty-five million, one hundred twenty thousand, three hundred forty-nine".