45221664 has 48 divisors (see below), whose sum is σ = 119054880. Its totient is φ = 15029760.

The previous prime is 45221663. The next prime is 45221669. The reversal of 45221664 is 46612254.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (45221663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59044 + ... + 59804.

It is an arithmetic number, because the mean of its divisors is an integer number (2480310).

Almost surely, 2^45221664 is an apocalyptic number.

It is an amenable number.

45221664 is an abundant number, since it is smaller than the sum of its proper divisors (73833216).

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

45221664 is a wasteful number, since it uses less digits than its factorization.

45221664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1385 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 45221664 is about 6724.7054954102. The cubic root of 45221664 is about 356.2724001920.

The spelling of 45221664 in words is "forty-five million, two hundred twenty-one thousand, six hundred sixty-four".