7213805553 has 8 divisors (see below), whose sum is σ = 9620488768. Its totient is φ = 4808163024.

The previous prime is 7213805503. The next prime is 7213805561. The reversal of 7213805553 is 3555083127.

7213805553 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7213805553 - 2¹⁰ = 7213804529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7213805503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243850 + ... + 271827.

It is an arithmetic number, because the mean of its divisors is an integer number (1202561096).

Almost surely, 2^7213805553 is an apocalyptic number.

It is an amenable number.

7213805553 is a deficient number, since it is larger than the sum of its proper divisors (2406683215).

7213805553 is a wasteful number, since it uses less digits than its factorization.

7213805553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520343.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 7213805553 is about 84934.1247850356. The cubic root of 7213805553 is about 1932.2121585338.

The spelling of 7213805553 in words is "seven billion, two hundred thirteen million, eight hundred five thousand, five hundred fifty-three".