1053535121 has 4 divisors (see below), whose sum is σ = 1053632292. Its totient is φ = 1053437952.

The previous prime is 1053535111. The next prime is 1053535157. The reversal of 1053535121 is 1215353501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 443692096 + 609843025 = 21064^2 + 24695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1053535121 is a prime.

It is a super-2 number, since 2×1053535121² = 2219872502360969282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1053535111) 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, 29936 + ... + 54801.

It is an arithmetic number, because the mean of its divisors is an integer number (263408073).

Almost surely, 2^1053535121 is an apocalyptic number.

It is an amenable number.

1053535121 is a deficient number, since it is larger than the sum of its proper divisors (97171).

1053535121 is an equidigital number, since it uses as much as digits as its factorization.

1053535121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97170.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1053535121 is about 32458.2057575584. The cubic root of 1053535121 is about 1017.5357407050.

Adding to 1053535121 its reverse (1215353501), we get a palindrome (2268888622).

The spelling of 1053535121 in words is "one billion, fifty-three million, five hundred thirty-five thousand, one hundred twenty-one".