45238649 has 4 divisors (see below), whose sum is σ = 47899764. Its totient is φ = 42577536.

The previous prime is 45238619. The next prime is 45238651. The reversal of 45238649 is 94683254.

45238649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 21160000 + 24078649 = 4600^2 + 4907^2 .

It is a cyclic number.

It is not a de Polignac number, because 45238649 - 2¹⁶ = 45173113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45238619) 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 3 ways as a sum of consecutive naturals, for example, 1330532 + ... + 1330565.

It is an arithmetic number, because the mean of its divisors is an integer number (11974941).

Almost surely, 2^45238649 is an apocalyptic number.

It is an amenable number.

45238649 is a deficient number, since it is larger than the sum of its proper divisors (2661115).

45238649 is a wasteful number, since it uses less digits than its factorization.

45238649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661114.

The product of its digits is 207360, while the sum is 41.

The square root of 45238649 is about 6725.9682574333. The cubic root of 45238649 is about 356.3169992383.

The spelling of 45238649 in words is "forty-five million, two hundred thirty-eight thousand, six hundred forty-nine".