155044103 has 2 divisors, whose sum is σ = 155044104. Its totient is φ = 155044102.

The previous prime is 155044093. The next prime is 155044139. The reversal of 155044103 is 301440551.

155044103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (301440551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155044103 - 2¹² = 155040007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155344103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77522051 + 77522052.

It is an arithmetic number, because the mean of its divisors is an integer number (77522052).

Almost surely, 2^155044103 is an apocalyptic number.

155044103 is a deficient number, since it is larger than the sum of its proper divisors (1).

155044103 is an equidigital number, since it uses as much as digits as its factorization.

155044103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 155044103 is about 12451.6706911161. The cubic root of 155044103 is about 537.2194784995.

Adding to 155044103 its reverse (301440551), we get a palindrome (456484654).

The spelling of 155044103 in words is "one hundred fifty-five million, forty-four thousand, one hundred three".