155020103 has 8 divisors (see below), whose sum is σ = 177372672. Its totient is φ = 132719256.

The previous prime is 155020097. The next prime is 155020141. The reversal of 155020103 is 301020551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155020103 - 2⁶ = 155020039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154020103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6275 + ... + 18692.

It is an arithmetic number, because the mean of its divisors is an integer number (22171584).

Almost surely, 2^155020103 is an apocalyptic number.

155020103 is a deficient number, since it is larger than the sum of its proper divisors (22352569).

155020103 is an equidigital number, since it uses as much as digits as its factorization.

155020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25861.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 155020103 is about 12450.7069277210. The cubic root of 155020103 is about 537.1917574993.

Adding to 155020103 its reverse (301020551), we get a palindrome (456040654).

The spelling of 155020103 in words is "one hundred fifty-five million, twenty thousand, one hundred three".