222147445 has 16 divisors (see below), whose sum is σ = 294845040. Its totient is φ = 159611904.

The previous prime is 222147407. The next prime is 222147461. The reversal of 222147445 is 544741222.

It can be written as a sum of positive squares in 8 ways, for example, as 77841 + 222069604 = 279^2 + 14902^2 .

It is a cyclic number.

It is not a de Polignac number, because 222147445 - 2²¹ = 220050293 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, 43780 + ... + 48589.

It is an arithmetic number, because the mean of its divisors is an integer number (18427815).

Almost surely, 2^222147445 is an apocalyptic number.

It is an amenable number.

222147445 is a deficient number, since it is larger than the sum of its proper divisors (72697595).

222147445 is a wasteful number, since it uses less digits than its factorization.

222147445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92424.

The product of its digits is 17920, while the sum is 31.

The square root of 222147445 is about 14904.6115346895. The cubic root of 222147445 is about 605.6389170403.

Adding to 222147445 its reverse (544741222), we get a palindrome (766888667).

The spelling of 222147445 in words is "two hundred twenty-two million, one hundred forty-seven thousand, four hundred forty-five".