1045521045 has 24 divisors (see below), whose sum is σ = 1813279416. Its totient is φ = 557290368.

The previous prime is 1045521019. The next prime is 1045521047. The reversal of 1045521045 is 5401255401.

1045521045 is a `hidden beast` number, since 1 + 0 + 4 + 552 + 104 + 5 = 666.

1045521045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 370716516 + 674804529 = 19254^2 + 25977^2 .

It is not a de Polignac number, because 1045521045 - 2¹¹ = 1045518997 is a prime.

It is a super-2 number, since 2×1045521045² = 2186228511075784050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045521047) 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, 86727 + ... + 98043.

It is an arithmetic number, because the mean of its divisors is an integer number (75553309).

Almost surely, 2^1045521045 is an apocalyptic number.

1045521045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1045521045 is a deficient number, since it is larger than the sum of its proper divisors (767758371).

1045521045 is a wasteful number, since it uses less digits than its factorization.

1045521045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13381 (or 13378 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1045521045 is about 32334.5178563095. The cubic root of 1045521045 is about 1014.9490927092.

Adding to 1045521045 its reverse (5401255401), we get a palindrome (6446776446).

The spelling of 1045521045 in words is "one billion, forty-five million, five hundred twenty-one thousand, forty-five".