21522541053 has 16 divisors (see below), whose sum is σ = 30909513600. Its totient is φ = 13242346944.

The previous prime is 21522541049. The next prime is 21522541097. The reversal of 21522541053 is 35014522512.

It is not a de Polignac number, because 21522541053 - 2² = 21522541049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21522541053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21522541003) 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, 196048 + ... + 285446.

It is an arithmetic number, because the mean of its divisors is an integer number (1931844600).

Almost surely, 2^21522541053 is an apocalyptic number.

It is an amenable number.

21522541053 is a deficient number, since it is larger than the sum of its proper divisors (9386972547).

21522541053 is a wasteful number, since it uses less digits than its factorization.

21522541053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95588.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 21522541053 in words is "twenty-one billion, five hundred twenty-two million, five hundred forty-one thousand, fifty-three".