45643243 has 4 divisors (see below), whose sum is σ = 45685728. Its totient is φ = 45600760.

The previous prime is 45643219. The next prime is 45643261. The reversal of 45643243 is 34234654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34234654 = 2 ⋅17117327.

It is a cyclic number.

It is not a de Polignac number, because 45643243 - 2⁵ = 45643211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45643043) 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, 19588 + ... + 21793.

It is an arithmetic number, because the mean of its divisors is an integer number (11421432).

Almost surely, 2^45643243 is an apocalyptic number.

45643243 is a deficient number, since it is larger than the sum of its proper divisors (42485).

45643243 is a wasteful number, since it uses less digits than its factorization.

45643243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42484.

The product of its digits is 34560, while the sum is 31.

The square root of 45643243 is about 6755.9783155365. The cubic root of 45643243 is about 357.3760941169.

Adding to 45643243 its reverse (34234654), we get a palindrome (79877897).

The spelling of 45643243 in words is "forty-five million, six hundred forty-three thousand, two hundred forty-three".