21524500053 has 24 divisors (see below), whose sum is σ = 35584001856. Its totient is φ = 12281889600.

The previous prime is 21524500033. The next prime is 21524500061. The reversal of 21524500053 is 35000542512.

It is a happy number.

21524500053 is a `hidden beast` number, since 2 + 152 + 4 + 500 + 0 + 5 + 3 = 666.

It is not a de Polignac number, because 21524500053 - 2⁹ = 21524499541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21524500033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203688 + ... + 290753.

It is an arithmetic number, because the mean of its divisors is an integer number (1482666744).

Almost surely, 2^21524500053 is an apocalyptic number.

It is an amenable number.

21524500053 is a deficient number, since it is larger than the sum of its proper divisors (14059501803).

21524500053 is a wasteful number, since it uses less digits than its factorization.

21524500053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495145 (or 495142 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 21524500053 in words is "twenty-one billion, five hundred twenty-four million, five hundred thousand, fifty-three".