21552225535 has 8 divisors (see below), whose sum is σ = 25863924240. Its totient is φ = 17240944704.

The previous prime is 21552225529. The next prime is 21552225547. The reversal of 21552225535 is 53552225512.

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

It is a cyclic number.

It is not a de Polignac number, because 21552225535 - 2⁵ = 21552225503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21552225494 and 21552225503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23184 + ... + 208906.

It is an arithmetic number, because the mean of its divisors is an integer number (3232990530).

Almost surely, 2^21552225535 is an apocalyptic number.

21552225535 is a deficient number, since it is larger than the sum of its proper divisors (4311698705).

21552225535 is a wasteful number, since it uses less digits than its factorization.

21552225535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208937.

The product of its digits is 150000, while the sum is 37.

The spelling of 21552225535 in words is "twenty-one billion, five hundred fifty-two million, two hundred twenty-five thousand, five hundred thirty-five".