223402154 has 4 divisors (see below), whose sum is σ = 335103234. Its totient is φ = 111701076.

The previous prime is 223402147. The next prime is 223402169. The reversal of 223402154 is 451204322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451204322 = 2 ⋅225602161.

It can be written as a sum of positive squares in only one way, i.e., 131721529 + 91680625 = 11477^2 + 9575^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 55850537 + ... + 55850540.

Almost surely, 2^223402154 is an apocalyptic number.

223402154 is a deficient number, since it is larger than the sum of its proper divisors (111701080).

223402154 is a wasteful number, since it uses less digits than its factorization.

223402154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111701079.

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

The square root of 223402154 is about 14946.6435697116. The cubic root of 223402154 is about 606.7770116208. Note that the first 3 decimals are identical.

Adding to 223402154 its reverse (451204322), we get a palindrome (674606476).

The spelling of 223402154 in words is "two hundred twenty-three million, four hundred two thousand, one hundred fifty-four".