222054145 has 4 divisors (see below), whose sum is σ = 266464980. Its totient is φ = 177643312.

The previous prime is 222054137. The next prime is 222054149. The reversal of 222054145 is 541450222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 135210384 + 86843761 = 11628^2 + 9319^2 .

It is a cyclic number.

It is not a de Polignac number, because 222054145 - 2³ = 222054137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222054149) 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, 22205410 + ... + 22205419.

It is an arithmetic number, because the mean of its divisors is an integer number (66616245).

Almost surely, 2^222054145 is an apocalyptic number.

It is an amenable number.

222054145 is a deficient number, since it is larger than the sum of its proper divisors (44410835).

222054145 is an equidigital number, since it uses as much as digits as its factorization.

222054145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44410834.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 222054145 is about 14901.4813022062. The cubic root of 222054145 is about 605.5541174702.

It can be divided in two parts, 2220 and 54145, that added together give a palindrome (56365).

The spelling of 222054145 in words is "two hundred twenty-two million, fifty-four thousand, one hundred forty-five".