222550545 has 32 divisors (see below), whose sum is σ = 407715840. Its totient is φ = 101545920.

The previous prime is 222550543. The next prime is 222550547. The reversal of 222550545 is 545055222.

It is an interprime number because it is at equal distance from previous prime (222550543) and next prime (222550547).

It is not a de Polignac number, because 222550545 - 2¹ = 222550543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222550543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64576 + ... + 67934.

It is an arithmetic number, because the mean of its divisors is an integer number (12741120).

Almost surely, 2^222550545 is an apocalyptic number.

It is an amenable number.

222550545 is a deficient number, since it is larger than the sum of its proper divisors (185165295).

222550545 is a wasteful number, since it uses less digits than its factorization.

222550545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 222550545 is about 14918.1280662153. The cubic root of 222550545 is about 606.0050185296.

The spelling of 222550545 in words is "two hundred twenty-two million, five hundred fifty thousand, five hundred forty-five".