289200055 has 4 divisors (see below), whose sum is σ = 347040072. Its totient is φ = 231360040.

The previous prime is 289200053. The next prime is 289200113. The reversal of 289200055 is 550002982.

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 289200055 - 2¹ = 289200053 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289200053) 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, 28920001 + ... + 28920010.

It is an arithmetic number, because the mean of its divisors is an integer number (86760018).

Almost surely, 2^289200055 is an apocalyptic number.

289200055 is a deficient number, since it is larger than the sum of its proper divisors (57840017).

289200055 is an equidigital number, since it uses as much as digits as its factorization.

289200055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57840016.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 289200055 is about 17005.8829526726. The cubic root of 289200055 is about 661.3014227635.

The spelling of 289200055 in words is "two hundred eighty-nine million, two hundred thousand, fifty-five".