238221055 has 16 divisors (see below), whose sum is σ = 293466240. Its totient is φ = 185571232.

The previous prime is 238221047. The next prime is 238221083. The reversal of 238221055 is 550122832.

It is a cyclic number.

It is not a de Polignac number, because 238221055 - 2³ = 238221047 is a prime.

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, 27792 + ... + 35338.

It is an arithmetic number, because the mean of its divisors is an integer number (18341640).

Almost surely, 2^238221055 is an apocalyptic number.

238221055 is a deficient number, since it is larger than the sum of its proper divisors (55245185).

238221055 is a wasteful number, since it uses less digits than its factorization.

238221055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7718.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 238221055 is about 15434.4113914331. The cubic root of 238221055 is about 619.9072485254.

Adding to 238221055 its reverse (550122832), we get a palindrome (788343887).

The spelling of 238221055 in words is "two hundred thirty-eight million, two hundred twenty-one thousand, fifty-five".