222500155 has 8 divisors (see below), whose sum is σ = 270761184. Its totient is φ = 175492800.

The previous prime is 222500149. The next prime is 222500167. The reversal of 222500155 is 551005222.

222500155 is digitally balanced in base 2, 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 222500155 - 2⁷ = 222500027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313026 + ... + 313735.

It is an arithmetic number, because the mean of its divisors is an integer number (33845148).

Almost surely, 2^222500155 is an apocalyptic number.

222500155 is a deficient number, since it is larger than the sum of its proper divisors (48261029).

222500155 is an equidigital number, since it uses as much as digits as its factorization.

222500155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626837.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 222500155 is about 14916.4390857872. The cubic root of 222500155 is about 605.9592777626.

Adding to 222500155 its reverse (551005222), we get a palindrome (773505377).

The spelling of 222500155 in words is "two hundred twenty-two million, five hundred thousand, one hundred fifty-five".