45105500 has 96 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 16008000.

The previous prime is 45105499. The next prime is 45105503. The reversal of 45105500 is 550154.

It is a super-2 number, since 2×45105500² = 4069012260500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45105503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324431 + ... + 324569.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600).

Almost surely, 2^45105500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45105500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55036800).

45105500 is an abundant number, since it is smaller than the sum of its proper divisors (64968100).

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

45105500 is a wasteful number, since it uses less digits than its factorization.

45105500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 45105500 is about 6716.0628347269. The cubic root of 45105500 is about 355.9670781322.

Adding to 45105500 its reverse (550154), we get a palindrome (45655654).

The spelling of 45105500 in words is "forty-five million, one hundred five thousand, five hundred".