45138743 has 4 divisors (see below), whose sum is σ = 48610968. Its totient is φ = 41666520.

The previous prime is 45138739. The next prime is 45138773. The reversal of 45138743 is 34783154.

45138743 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 is a cyclic number.

It is not a de Polignac number, because 45138743 - 2² = 45138739 is a prime.

It is a super-2 number, since 2×45138743² = 4075012239240098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45138713) 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, 1736093 + ... + 1736118.

It is an arithmetic number, because the mean of its divisors is an integer number (12152742).

Almost surely, 2^45138743 is an apocalyptic number.

45138743 is a deficient number, since it is larger than the sum of its proper divisors (3472225).

45138743 is a wasteful number, since it uses less digits than its factorization.

45138743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472224.

The product of its digits is 40320, while the sum is 35.

The square root of 45138743 is about 6718.5372663996. The cubic root of 45138743 is about 356.0545065513.

The spelling of 45138743 in words is "forty-five million, one hundred thirty-eight thousand, seven hundred forty-three".