1045544100 has 72 divisors (see below), whose sum is σ = 3046992480. Its totient is φ = 276794880.

The previous prime is 1045544077. The next prime is 1045544107. The reversal of 1045544100 is 14455401.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1045544107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29164 + ... + 54236.

It is an arithmetic number, because the mean of its divisors is an integer number (42319340).

Almost surely, 2^1045544100 is an apocalyptic number.

1045544100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1045544100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1523496240).

1045544100 is an abundant number, since it is smaller than the sum of its proper divisors (2001448380).

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

1045544100 is a wasteful number, since it uses less digits than its factorization.

1045544100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25229 (or 25222 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1045544100 is about 32334.8743619022. The cubic root of 1045544100 is about 1014.9565529382.

Adding to 1045544100 its reverse (14455401), we get a palindrome (1059999501).

The spelling of 1045544100 in words is "one billion, forty-five million, five hundred forty-four thousand, one hundred".