155144134 has 4 divisors (see below), whose sum is σ = 232716204. Its totient is φ = 77572066.

The previous prime is 155144117. The next prime is 155144137. The reversal of 155144134 is 431441551.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155144137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38786032 + ... + 38786035.

It is an arithmetic number, because the mean of its divisors is an integer number (58179051).

Almost surely, 2^155144134 is an apocalyptic number.

155144134 is a deficient number, since it is larger than the sum of its proper divisors (77572070).

155144134 is an equidigital number, since it uses as much as digits as its factorization.

155144134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77572069.

The product of its digits is 4800, while the sum is 28.

The square root of 155144134 is about 12455.6868136607. The cubic root of 155144134 is about 537.3349876735.

Adding to 155144134 its reverse (431441551), we get a palindrome (586585685).

The spelling of 155144134 in words is "one hundred fifty-five million, one hundred forty-four thousand, one hundred thirty-four".