45556566 has 64 divisors (see below), whose sum is σ = 110833920. Its totient is φ = 12303360.

The previous prime is 45556561. The next prime is 45556579. The reversal of 45556566 is 66565554.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45556561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20250 + ... + 22386.

It is an arithmetic number, because the mean of its divisors is an integer number (1731780).

Almost surely, 2^45556566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45556566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55416960).

45556566 is an abundant number, since it is smaller than the sum of its proper divisors (65277354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45556566 is a wasteful number, since it uses less digits than its factorization.

45556566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189.

The product of its digits is 540000, while the sum is 42.

The square root of 45556566 is about 6749.5604301317. The cubic root of 45556566 is about 357.1497304430.

The spelling of 45556566 in words is "forty-five million, five hundred fifty-six thousand, five hundred sixty-six".