45643213 has 16 divisors (see below), whose sum is σ = 57479040. Its totient is φ = 35208000.

The previous prime is 45643211. The next prime is 45643217. The reversal of 45643213 is 31234654.

It is a cyclic number.

It is not a de Polignac number, because 45643213 - 2¹ = 45643211 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 (45643211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4843 + ... + 10711.

It is an arithmetic number, because the mean of its divisors is an integer number (3592440).

Almost surely, 2^45643213 is an apocalyptic number.

It is an amenable number.

45643213 is a deficient number, since it is larger than the sum of its proper divisors (11835827).

45643213 is a wasteful number, since it uses less digits than its factorization.

45643213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5988.

The product of its digits is 8640, while the sum is 28.

The square root of 45643213 is about 6755.9760952804. The cubic root of 45643213 is about 357.3760158191.

Adding to 45643213 its reverse (31234654), we get a palindrome (76877867).

It can be divided in two parts, 4564 and 3213, that added together give a palindrome (7777).

The spelling of 45643213 in words is "forty-five million, six hundred forty-three thousand, two hundred thirteen".