45440144 has 20 divisors (see below), whose sum is σ = 90420924. Its totient is φ = 22105728.

The previous prime is 45440119. The next prime is 45440159. The reversal of 45440144 is 44104454.

It can be written as a sum of positive squares in 2 ways, for example, as 41113744 + 4326400 = 6412^2 + 2080^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37787 + ... + 38970.

Almost surely, 2^45440144 is an apocalyptic number.

It is an amenable number.

45440144 is a deficient number, since it is larger than the sum of its proper divisors (44980780).

45440144 is a wasteful number, since it uses less digits than its factorization.

45440144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76802 (or 76796 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 45440144 is about 6740.9304995675. The cubic root of 45440144 is about 356.8452331266.

Adding to 45440144 its reverse (44104454), we get a palindrome (89544598).

The spelling of 45440144 in words is "forty-five million, four hundred forty thousand, one hundred forty-four".