222649045 has 4 divisors (see below), whose sum is σ = 267178860. Its totient is φ = 178119232.

The previous prime is 222649027. The next prime is 222649057. The reversal of 222649045 is 540946222.

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 169052004 + 53597041 = 13002^2 + 7321^2 .

It is a cyclic number.

It is not a de Polignac number, because 222649045 - 2²¹ = 220551893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222649045.

It is a congruent number.

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, 22264900 + ... + 22264909.

It is an arithmetic number, because the mean of its divisors is an integer number (66794715).

Almost surely, 2^222649045 is an apocalyptic number.

It is an amenable number.

222649045 is a deficient number, since it is larger than the sum of its proper divisors (44529815).

222649045 is an equidigital number, since it uses as much as digits as its factorization.

222649045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44529814.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 222649045 is about 14921.4290535458. The cubic root of 222649045 is about 606.0944104923.

The spelling of 222649045 in words is "two hundred twenty-two million, six hundred forty-nine thousand, forty-five".