222450145 has 4 divisors (see below), whose sum is σ = 266940180. Its totient is φ = 177960112.

The previous prime is 222450139. The next prime is 222450161. The reversal of 222450145 is 541054222.

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 148644864 + 73805281 = 12192^2 + 8591^2 .

It is a cyclic number.

It is not a de Polignac number, because 222450145 - 2¹¹ = 222448097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22245010 + ... + 22245019.

It is an arithmetic number, because the mean of its divisors is an integer number (66735045).

Almost surely, 2^222450145 is an apocalyptic number.

It is an amenable number.

222450145 is a deficient number, since it is larger than the sum of its proper divisors (44490035).

222450145 is an equidigital number, since it uses as much as digits as its factorization.

222450145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44490034.

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

The square root of 222450145 is about 14914.7626531568. The cubic root of 222450145 is about 605.9138751063.

The spelling of 222450145 in words is "two hundred twenty-two million, four hundred fifty thousand, one hundred forty-five".