222430154 has 4 divisors (see below), whose sum is σ = 333645234. Its totient is φ = 111215076.

The previous prime is 222430147. The next prime is 222430183. The reversal of 222430154 is 451034222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 141015625 + 81414529 = 11875^2 + 9023^2 .

It is a super-5 number, since 5×222430154⁵ (a number of 43 digits) contains 55555 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55607537 + ... + 55607540.

Almost surely, 2^222430154 is an apocalyptic number.

222430154 is a deficient number, since it is larger than the sum of its proper divisors (111215080).

222430154 is a wasteful number, since it uses less digits than its factorization.

222430154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111215079.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 222430154 is about 14914.0924631705. The cubic root of 222430154 is about 605.8957239424.

Adding to 222430154 its reverse (451034222), we get a palindrome (673464376).

The spelling of 222430154 in words is "two hundred twenty-two million, four hundred thirty thousand, one hundred fifty-four".