1053521540333 has 4 divisors (see below), whose sum is σ = 1089849869340. Its totient is φ = 1017193211328.

The previous prime is 1053521540329. The next prime is 1053521540339. The reversal of 1053521540333 is 3330451253501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 394562372164 + 658959168169 = 628142^2 + 811763^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053521540333 - 2² = 1053521540329 is a prime.

It is a super-2 number, since 2×1053521540333² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1053521540293 and 1053521540302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053521540339) 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, 18164164460 + ... + 18164164517.

It is an arithmetic number, because the mean of its divisors is an integer number (272462467335).

Almost surely, 2^{1053521540333} is an apocalyptic number.

It is an amenable number.

1053521540333 is a deficient number, since it is larger than the sum of its proper divisors (36328329007).

1053521540333 is an equidigital number, since it uses as much as digits as its factorization.

1053521540333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36328329006.

The product of its (nonzero) digits is 81000, while the sum is 35.

Adding to 1053521540333 its reverse (3330451253501), we get a palindrome (4383972793834).

The spelling of 1053521540333 in words is "one trillion, fifty-three billion, five hundred twenty-one million, five hundred forty thousand, three hundred thirty-three".