172555103 has 4 divisors (see below), whose sum is σ = 197205840. Its totient is φ = 147904368.

The previous prime is 172555079. The next prime is 172555111. The reversal of 172555103 is 301555271.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 172555103 - 2¹⁰ = 172554079 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 (172555193) 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, 12325358 + ... + 12325371.

It is an arithmetic number, because the mean of its divisors is an integer number (49301460).

Almost surely, 2^172555103 is an apocalyptic number.

172555103 is a deficient number, since it is larger than the sum of its proper divisors (24650737).

172555103 is an equidigital number, since it uses as much as digits as its factorization.

172555103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24650736.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 172555103 is about 13136.0231044255. The cubic root of 172555103 is about 556.7274080435.

The spelling of 172555103 in words is "one hundred seventy-two million, five hundred fifty-five thousand, one hundred three".