155134549 has 2 divisors, whose sum is σ = 155134550. Its totient is φ = 155134548.

The previous prime is 155134513. The next prime is 155134561. The reversal of 155134549 is 945431551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114875524 + 40259025 = 10718^2 + 6345^2 .

It is a cyclic number.

It is not a de Polignac number, because 155134549 - 2¹⁵ = 155101781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155131549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77567274 + 77567275.

It is an arithmetic number, because the mean of its divisors is an integer number (77567275).

Almost surely, 2^155134549 is an apocalyptic number.

It is an amenable number.

155134549 is a deficient number, since it is larger than the sum of its proper divisors (1).

155134549 is an equidigital number, since it uses as much as digits as its factorization.

155134549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 37.

The square root of 155134549 is about 12455.3020437081. The cubic root of 155134549 is about 537.3239217015.

It can be divided in two parts, 1551 and 34549, that added together give a square (36100 = 190²).

The spelling of 155134549 in words is "one hundred fifty-five million, one hundred thirty-four thousand, five hundred forty-nine".