1053500021523 has 24 divisors (see below), whose sum is σ = 1533405841968. Its totient is φ = 696944777472.

The previous prime is 1053500021513. The next prime is 1053500021527. The reversal of 1053500021523 is 3251200053501.

It is a happy number.

1053500021523 is a `hidden beast` number, since 1 + 0 + 5 + 3 + 500 + 0 + 2 + 152 + 3 = 666.

It is not a de Polignac number, because 1053500021523 - 2⁸ = 1053500021267 is a prime.

It is a super-2 number, since 2×1053500021523² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1053500021527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3148911 + ... + 3467367.

It is an arithmetic number, because the mean of its divisors is an integer number (63891910082).

Almost surely, 2^{1053500021523} is an apocalyptic number.

1053500021523 is a deficient number, since it is larger than the sum of its proper divisors (479905820445).

1053500021523 is a wasteful number, since it uses less digits than its factorization.

1053500021523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321283 (or 321280 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 1053500021523 in words is "one trillion, fifty-three billion, five hundred million, twenty-one thousand, five hundred twenty-three".