154215133 has 2 divisors, whose sum is σ = 154215134. Its totient is φ = 154215132.

The previous prime is 154215121. The next prime is 154215169. The reversal of 154215133 is 331512451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130028409 + 24186724 = 11403^2 + 4918^2 .

It is a cyclic number.

It is not a de Polignac number, because 154215133 - 2²¹ = 152117981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154215098 and 154215107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154215233) 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 as a sum of consecutive naturals, namely, 77107566 + 77107567.

It is an arithmetic number, because the mean of its divisors is an integer number (77107567).

Almost surely, 2^154215133 is an apocalyptic number.

It is an amenable number.

154215133 is a deficient number, since it is larger than the sum of its proper divisors (1).

154215133 is an equidigital number, since it uses as much as digits as its factorization.

154215133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 154215133 is about 12418.3385764763. The cubic root of 154215133 is about 536.2603215412.

Adding to 154215133 its reverse (331512451), we get a palindrome (485727584).

The spelling of 154215133 in words is "one hundred fifty-four million, two hundred fifteen thousand, one hundred thirty-three".