1053521343 has 16 divisors (see below), whose sum is σ = 1783740160. Its totient is φ = 602012088.

The previous prime is 1053521341. The next prime is 1053521351. The reversal of 1053521343 is 3431253501.

1053521343 is a `hidden beast` number, since 105 + 3 + 521 + 34 + 3 = 666.

It is not a de Polignac number, because 1053521343 - 2¹ = 1053521341 is a prime.

It is a super-2 number, since 2×1053521343² = 2219814440313047298, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053521341) 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, 2786905 + ... + 2787282.

It is an arithmetic number, because the mean of its divisors is an integer number (111483760).

Almost surely, 2^1053521343 is an apocalyptic number.

1053521343 is a deficient number, since it is larger than the sum of its proper divisors (730218817).

1053521343 is an equidigital number, since it uses as much as digits as its factorization.

1053521343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574203 (or 5574197 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1053521343 is about 32457.9935146953. The cubic root of 1053521343 is about 1017.5313049508.

Adding to 1053521343 its reverse (3431253501), we get a palindrome (4484774844).

It can be divided in two parts, 10535 and 21343, that added together give a triangular number (31878 = T₂₅₂).

The spelling of 1053521343 in words is "one billion, fifty-three million, five hundred twenty-one thousand, three hundred forty-three".