154222133 has 12 divisors (see below), whose sum is σ = 168242148. Its totient is φ = 141298560.

The previous prime is 154222129. The next prime is 154222139. The reversal of 154222133 is 331222451.

154222133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 908209 + 153313924 = 953^2 + 12382^2 .

It is not a de Polignac number, because 154222133 - 2² = 154222129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154222099 and 154222108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154222139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19823 + ... + 26483.

It is an arithmetic number, because the mean of its divisors is an integer number (14020179).

Almost surely, 2^154222133 is an apocalyptic number.

154222133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

154222133 is a deficient number, since it is larger than the sum of its proper divisors (14020015).

154222133 is a wasteful number, since it uses less digits than its factorization.

154222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824 (or 6811 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 154222133 is about 12418.6204145227. The cubic root of 154222133 is about 536.2684352401.

Adding to 154222133 its reverse (331222451), we get a palindrome (485444584).

The spelling of 154222133 in words is "one hundred fifty-four million, two hundred twenty-two thousand, one hundred thirty-three".