1053352221 has 4 divisors (see below), whose sum is σ = 1404469632. Its totient is φ = 702234812.

The previous prime is 1053352219. The next prime is 1053352231. The reversal of 1053352221 is 1222533501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1053352221 - 2¹ = 1053352219 is a prime.

It is a super-2 number, since 2×1053352221² = 2219101802971265682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1053352191 and 1053352200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053352211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175558701 + ... + 175558706.

It is an arithmetic number, because the mean of its divisors is an integer number (351117408).

Almost surely, 2^1053352221 is an apocalyptic number.

It is an amenable number.

1053352221 is a deficient number, since it is larger than the sum of its proper divisors (351117411).

1053352221 is an equidigital number, since it uses as much as digits as its factorization.

1053352221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351117410.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1053352221 is about 32455.3881659117. The cubic root of 1053352221 is about 1017.4768538664.

Adding to 1053352221 its reverse (1222533501), we get a palindrome (2275885722).

The spelling of 1053352221 in words is "one billion, fifty-three million, three hundred fifty-two thousand, two hundred twenty-one".