1053531521015 has 8 divisors (see below), whose sum is σ = 1319204687328. Its totient is φ = 806180642080.

The previous prime is 1053531521011. The next prime is 1053531521093. The reversal of 1053531521015 is 5101251353501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1053531521015 - 2² = 1053531521011 is a prime.

It is a super-2 number, since 2×1053531521015² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053531521011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4580571716 + ... + 4580571945.

It is an arithmetic number, because the mean of its divisors is an integer number (164900585916).

Almost surely, 2^{1053531521015} is an apocalyptic number.

1053531521015 is a deficient number, since it is larger than the sum of its proper divisors (265673166313).

1053531521015 is an equidigital number, since it uses as much as digits as its factorization.

1053531521015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9161143689.

The product of its (nonzero) digits is 11250, while the sum is 32.

Adding to 1053531521015 its reverse (5101251353501), we get a palindrome (6154782874516).

The spelling of 1053531521015 in words is "one trillion, fifty-three billion, five hundred thirty-one million, five hundred twenty-one thousand, fifteen".