45545556 has 48 divisors (see below), whose sum is σ = 122411520. Its totient is φ = 12910560.

The previous prime is 45545531. The next prime is 45545561. The reversal of 45545556 is 65554554.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8935 + ... + 13073.

It is an arithmetic number, because the mean of its divisors is an integer number (2550240).

Almost surely, 2^45545556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45545556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61205760).

45545556 is an abundant number, since it is smaller than the sum of its proper divisors (76865964).

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

45545556 is a wasteful number, since it uses less digits than its factorization.

45545556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284 (or 4282 counting only the distinct ones).

The product of its digits is 300000, while the sum is 39.

The square root of 45545556 is about 6748.7447721780. The cubic root of 45545556 is about 357.1209564323.

The spelling of 45545556 in words is "forty-five million, five hundred forty-five thousand, five hundred fifty-six".