45372749 has 4 divisors (see below), whose sum is σ = 45486300. Its totient is φ = 45259200.

The previous prime is 45372739. The next prime is 45372751. The reversal of 45372749 is 94727354.

45372749 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 38217124 + 7155625 = 6182^2 + 2675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45372749 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 (45372709) 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, 56174 + ... + 56975.

It is an arithmetic number, because the mean of its divisors is an integer number (11371575).

Almost surely, 2^45372749 is an apocalyptic number.

It is an amenable number.

45372749 is a deficient number, since it is larger than the sum of its proper divisors (113551).

45372749 is a wasteful number, since it uses less digits than its factorization.

45372749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113550.

The product of its digits is 211680, while the sum is 41.

The square root of 45372749 is about 6735.9297056902. The cubic root of 45372749 is about 356.6687263203.

The spelling of 45372749 in words is "forty-five million, three hundred seventy-two thousand, seven hundred forty-nine".