45643563 has 24 divisors (see below), whose sum is σ = 77782016. Its totient is φ = 25239600.

The previous prime is 45643553. The next prime is 45643573. The reversal of 45643563 is 36534654.

45643563 is a `hidden beast` number, since 4 + 5 + 643 + 5 + 6 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (45643553) and next prime (45643573).

It is not a de Polignac number, because 45643563 - 2⁵ = 45643531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45643553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9733 + ... + 13638.

Almost surely, 2^45643563 is an apocalyptic number.

45643563 is a deficient number, since it is larger than the sum of its proper divisors (32138453).

45643563 is a wasteful number, since it uses less digits than its factorization.

45643563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23415 (or 23412 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 45643563 is about 6756.0019982235. The cubic root of 45643563 is about 357.3769292904.

The spelling of 45643563 in words is "forty-five million, six hundred forty-three thousand, five hundred sixty-three".