45221544 has 32 divisors (see below), whose sum is σ = 125616000. Its totient is φ = 15073776.

The previous prime is 45221537. The next prime is 45221549. The reversal of 45221544 is 44512254.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (45221549) 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, 104464 + ... + 104895.

It is an arithmetic number, because the mean of its divisors is an integer number (3925500).

Almost surely, 2^45221544 is an apocalyptic number.

It is an amenable number.

45221544 is an abundant number, since it is smaller than the sum of its proper divisors (80394456).

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

45221544 is a wasteful number, since it uses less digits than its factorization.

45221544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209374 (or 209364 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 45221544 is about 6724.6965730805. The cubic root of 45221544 is about 356.2720850574.

Adding to 45221544 its reverse (44512254), we get a palindrome (89733798).

The spelling of 45221544 in words is "forty-five million, two hundred twenty-one thousand, five hundred forty-four".