9955054821 has 4 divisors (see below), whose sum is σ = 13273406432. Its totient is φ = 6636703212.

The previous prime is 9955054793. The next prime is 9955054873. The reversal of 9955054821 is 1284505599.

9955054821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9955054821 - 2⁵ = 9955054789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9955055821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1659175801 + ... + 1659175806.

It is an arithmetic number, because the mean of its divisors is an integer number (3318351608).

Almost surely, 2^9955054821 is an apocalyptic number.

It is an amenable number.

9955054821 is a deficient number, since it is larger than the sum of its proper divisors (3318351611).

9955054821 is a wasteful number, since it uses less digits than its factorization.

9955054821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318351610.

The product of its (nonzero) digits is 648000, while the sum is 48.

The square root of 9955054821 is about 99775.0210273092. The cubic root of 9955054821 is about 2151.2021271538.

The spelling of 9955054821 in words is "nine billion, nine hundred fifty-five million, fifty-four thousand, eight hundred twenty-one".