1045524821 has 6 divisors (see below), whose sum is σ = 1149213366. Its totient is φ = 950477000.

The previous prime is 1045524797. The next prime is 1045524827. The reversal of 1045524821 is 1284255401.

It can be written as a sum of positive squares in only one way, i.e., 850363921 + 195160900 = 29161^2 + 13970^2 .

It is not a de Polignac number, because 1045524821 - 2¹⁴ = 1045508437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045524827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4320230 + ... + 4320471.

It is an arithmetic number, because the mean of its divisors is an integer number (191535561).

Almost surely, 2^1045524821 is an apocalyptic number.

1045524821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1045524821 is a deficient number, since it is larger than the sum of its proper divisors (103688545).

1045524821 is an equidigital number, since it uses as much as digits as its factorization.

1045524821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8640723 (or 8640712 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 1045524821 is about 32334.5762458703. The cubic root of 1045524821 is about 1014.9503145698.

The spelling of 1045524821 in words is "one billion, forty-five million, five hundred twenty-four thousand, eight hundred twenty-one".