153666222 has 8 divisors (see below), whose sum is σ = 307332456. Its totient is φ = 51222072.

The previous prime is 153666221. The next prime is 153666229. The reversal of 153666222 is 222666351.

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

153666222 is an admirable number.

It is a super-2 number, since 2×153666222² = 47226615567506568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153666221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12805513 + ... + 12805524.

It is an arithmetic number, because the mean of its divisors is an integer number (38416557).

Almost surely, 2^153666222 is an apocalyptic number.

153666222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

153666222 is a wasteful number, since it uses less digits than its factorization.

153666222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25611042.

The product of its digits is 25920, while the sum is 33.

The square root of 153666222 is about 12396.2180522932. The cubic root of 153666222 is about 535.6233128773.

The spelling of 153666222 in words is "one hundred fifty-three million, six hundred sixty-six thousand, two hundred twenty-two".