155004133 has 2 divisors, whose sum is σ = 155004134. Its totient is φ = 155004132.

The previous prime is 155004097. The next prime is 155004139. The reversal of 155004133 is 331400551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112402404 + 42601729 = 10602^2 + 6527^2 .

It is an emirp because it is prime and its reverse (331400551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155004133 - 2⁹ = 155003621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155004139) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77502066 + 77502067.

It is an arithmetic number, because the mean of its divisors is an integer number (77502067).

Almost surely, 2^155004133 is an apocalyptic number.

It is an amenable number.

155004133 is a deficient number, since it is larger than the sum of its proper divisors (1).

155004133 is an equidigital number, since it uses as much as digits as its factorization.

155004133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 155004133 is about 12450.0655821566. The cubic root of 155004133 is about 537.1733098984.

Adding to 155004133 its reverse (331400551), we get a palindrome (486404684).

The spelling of 155004133 in words is "one hundred fifty-five million, four thousand, one hundred thirty-three".