1053304021 has 16 divisors (see below), whose sum is σ = 1370308608. Its totient is φ = 785070000.

The previous prime is 1053304001. The next prime is 1053304027. The reversal of 1053304021 is 1204033501.

1053304021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1053304021 - 2⁵ = 1053303989 is a prime.

It is a super-2 number, since 2×1053304021² = 2218898721309536882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1053304021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053304027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295605 + ... + 299146.

It is an arithmetic number, because the mean of its divisors is an integer number (85644288).

Almost surely, 2^1053304021 is an apocalyptic number.

1053304021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1053304021 is a deficient number, since it is larger than the sum of its proper divisors (317004587).

1053304021 is a wasteful number, since it uses less digits than its factorization.

1053304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594792.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1053304021 is about 32454.6455996672. The cubic root of 1053304021 is about 1017.4613341661.

Adding to 1053304021 its reverse (1204033501), we get a palindrome (2257337522).

The spelling of 1053304021 in words is "one billion, fifty-three million, three hundred four thousand, twenty-one".