45221008 has 40 divisors (see below), whose sum is σ = 101789120. Its totient is φ = 19059840.

The previous prime is 45220979. The next prime is 45221021. The reversal of 45221008 is 80012254.

It is a self number, because there is not a number n which added to its sum of digits gives 45221008.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3523 + ... + 10141.

It is an arithmetic number, because the mean of its divisors is an integer number (2544728).

Almost surely, 2^45221008 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 45221008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50894560).

45221008 is an abundant number, since it is smaller than the sum of its proper divisors (56568112).

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

45221008 is a wasteful number, since it uses less digits than its factorization.

45221008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695 (or 6689 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 45221008 is about 6724.6567198631. The cubic root of 45221008 is about 356.2706774497.

The spelling of 45221008 in words is "forty-five million, two hundred twenty-one thousand, eight".