45531444 has 48 divisors (see below), whose sum is σ = 126701568. Its totient is φ = 12442848.

The previous prime is 45531427. The next prime is 45531449. The reversal of 45531444 is 44413554.

It is a super-2 number, since 2×45531444² = 4146224785450272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45531449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9852 + ... + 13715.

It is an arithmetic number, because the mean of its divisors is an integer number (2639616).

Almost surely, 2^45531444 is an apocalyptic number.

It is an amenable number.

45531444 is an abundant number, since it is smaller than the sum of its proper divisors (81170124).

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

45531444 is a wasteful number, since it uses less digits than its factorization.

45531444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23604 (or 23602 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 45531444 is about 6747.6991634186. The cubic root of 45531444 is about 357.0840687388.

Adding to 45531444 its reverse (44413554), we get a palindrome (89944998).

The spelling of 45531444 in words is "forty-five million, five hundred thirty-one thousand, four hundred forty-four".