655145222 has 8 divisors (see below), whose sum is σ = 982978896. Its totient is φ = 327485592.

The previous prime is 655145221. The next prime is 655145261. The reversal of 655145222 is 222541556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655145221) 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 3 ways as a sum of consecutive naturals, for example, 33653 + ... + 49424.

It is an arithmetic number, because the mean of its divisors is an integer number (122872362).

Almost surely, 2^655145222 is an apocalyptic number.

655145222 is a deficient number, since it is larger than the sum of its proper divisors (327833674).

655145222 is a wasteful number, since it uses less digits than its factorization.

655145222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87022.

The product of its digits is 24000, while the sum is 32.

The square root of 655145222 is about 25595.8047734389. The cubic root of 655145222 is about 868.5187380776.

Adding to 655145222 its reverse (222541556), we get a palindrome (877686778).

The spelling of 655145222 in words is "six hundred fifty-five million, one hundred forty-five thousand, two hundred twenty-two".