1053221408 has 18 divisors (see below), whose sum is σ = 2073891141. Its totient is φ = 526518912.

The previous prime is 1053221401. The next prime is 1053221413. The reversal of 1053221408 is 8041223501.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 624400144 + 428821264 = 24988^2 + 20708^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=22948.

It is a super-2 number, since 2×1053221408² = 2218550668539004928, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1053221401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 180716 + ... + 186452.

Almost surely, 2^1053221408 is an apocalyptic number.

It is an amenable number.

1053221408 is a deficient number, since it is larger than the sum of its proper divisors (1020669733).

1053221408 is an frugal number, since it uses more digits than its factorization.

1053221408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11484 (or 5739 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1053221408 is about 32453.3728293378. The cubic root of 1053221408 is about 1017.4347328781.

Adding to 1053221408 its reverse (8041223501), we get a palindrome (9094444909).

The spelling of 1053221408 in words is "one billion, fifty-three million, two hundred twenty-one thousand, four hundred eight".