45545643 has 48 divisors (see below), whose sum is σ = 79183104. Its totient is φ = 24857280.

The previous prime is 45545627. The next prime is 45545653. The reversal of 45545643 is 34654554.

45545643 is a `hidden beast` number, since 4 + 5 + 5 + 4 + 5 + 643 = 666.

It is not a de Polignac number, because 45545643 - 2⁴ = 45545627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45545598 and 45545607.

It is not an unprimeable number, because it can be changed into a prime (45545653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54930 + ... + 55752.

It is an arithmetic number, because the mean of its divisors is an integer number (1649648).

Almost surely, 2^45545643 is an apocalyptic number.

45545643 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

45545643 is a deficient number, since it is larger than the sum of its proper divisors (33637461).

45545643 is a wasteful number, since it uses less digits than its factorization.

45545643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 893 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 45545643 is about 6748.7512178180. The cubic root of 45545643 is about 357.1211838200.

The spelling of 45545643 in words is "forty-five million, five hundred forty-five thousand, six hundred forty-three".