7200055 has 4 divisors (see below), whose sum is σ = 8640072. Its totient is φ = 5760040.

The previous prime is 7200047. The next prime is 7200059. The reversal of 7200055 is 5500027.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7200055 - 2³ = 7200047 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 (7200059) 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, 720001 + ... + 720010.

It is an arithmetic number, because the mean of its divisors is an integer number (2160018).

Almost surely, 2^7200055 is an apocalyptic number.

7200055 is a deficient number, since it is larger than the sum of its proper divisors (1440017).

7200055 is a wasteful number, since it uses less digits than its factorization.

7200055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440016.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 7200055 is about 2683.2918216251. The cubic root of 7200055 is about 193.0983686043.

The spelling of 7200055 in words is "seven million, two hundred thousand, fifty-five".