155445103 has 16 divisors (see below), whose sum is σ = 175279104. Its totient is φ = 136611360.

The previous prime is 155445091. The next prime is 155445151. The reversal of 155445103 is 301544551.

It is a cyclic number.

It is not a de Polignac number, because 155445103 - 2²¹ = 153347951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155445163) 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 15 ways as a sum of consecutive naturals, for example, 66826 + ... + 69112.

It is an arithmetic number, because the mean of its divisors is an integer number (10954944).

Almost surely, 2^155445103 is an apocalyptic number.

155445103 is a deficient number, since it is larger than the sum of its proper divisors (19834001).

155445103 is a wasteful number, since it uses less digits than its factorization.

155445103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 155445103 is about 12467.7625498724. The cubic root of 155445103 is about 537.6822275944.

Adding to 155445103 its reverse (301544551), we get a palindrome (456989654).

The spelling of 155445103 in words is "one hundred fifty-five million, four hundred forty-five thousand, one hundred three".