45044550 has 72 divisors (see below), whose sum is σ = 124962240. Its totient is φ = 11620800.

The previous prime is 45044537. The next prime is 45044551. The reversal of 45044550 is 5544054.

It is a super-2 number, since 2×45044550² = 4058022969405000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45044551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12336 + ... + 15564.

Almost surely, 2^45044550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45044550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62481120).

45044550 is an abundant number, since it is smaller than the sum of its proper divisors (79917690).

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

45044550 is a wasteful number, since it uses less digits than its factorization.

45044550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278 (or 3270 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 45044550 is about 6711.5236720137. The cubic root of 45044550 is about 355.8066692148.

The spelling of 45044550 in words is "forty-five million, forty-four thousand, five hundred fifty".