155144113 has 4 divisors (see below), whose sum is σ = 160493940. Its totient is φ = 149794288.

The previous prime is 155144083. The next prime is 155144117. The reversal of 155144113 is 311441551.

155144113 = 8807² + 8808².

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

It can be written as a sum of positive squares in 2 ways, for example, as 77580864 + 77563249 = 8808^2 + 8807^2 .

It is a cyclic number.

It is not a de Polignac number, because 155144113 - 2⁵ = 155144081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155144117) 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 in 3 ways as a sum of consecutive naturals, for example, 2674870 + ... + 2674927.

It is an arithmetic number, because the mean of its divisors is an integer number (40123485).

Almost surely, 2^155144113 is an apocalyptic number.

155144113 is the 8808-th centered square number.

It is an amenable number.

155144113 is a deficient number, since it is larger than the sum of its proper divisors (5349827).

155144113 is an equidigital number, since it uses as much as digits as its factorization.

155144113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349826.

The product of its digits is 1200, while the sum is 25.

The square root of 155144113 is about 12455.6859706722. The cubic root of 155144113 is about 537.3349634293.

Adding to 155144113 its reverse (311441551), we get a palindrome (466585664).

The spelling of 155144113 in words is "one hundred fifty-five million, one hundred forty-four thousand, one hundred thirteen".