21552055255 has 16 divisors (see below), whose sum is σ = 25927428384. Its totient is φ = 17198386560.

The previous prime is 21552055237. The next prime is 21552055267. The reversal of 21552055255 is 55255025512.

It is not a de Polignac number, because 21552055255 - 2⁹ = 21552054743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5859477 + ... + 5863153.

It is an arithmetic number, because the mean of its divisors is an integer number (1620464274).

Almost surely, 2^21552055255 is an apocalyptic number.

21552055255 is a deficient number, since it is larger than the sum of its proper divisors (4375373129).

21552055255 is a wasteful number, since it uses less digits than its factorization.

21552055255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6306.

The product of its (nonzero) digits is 125000, while the sum is 37.

The spelling of 21552055255 in words is "twenty-one billion, five hundred fifty-two million, fifty-five thousand, two hundred fifty-five".