478172103 has 4 divisors (see below), whose sum is σ = 637562808. Its totient is φ = 318781400.

The previous prime is 478172087. The next prime is 478172111. The reversal of 478172103 is 301271874.

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 478172103 - 2⁴ = 478172087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478172203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79695348 + ... + 79695353.

It is an arithmetic number, because the mean of its divisors is an integer number (159390702).

Almost surely, 2^478172103 is an apocalyptic number.

478172103 is a deficient number, since it is larger than the sum of its proper divisors (159390705).

478172103 is a wasteful number, since it uses less digits than its factorization.

478172103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159390704.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 478172103 is about 21867.1466588579. The cubic root of 478172103 is about 781.9783785555.

The spelling of 478172103 in words is "four hundred seventy-eight million, one hundred seventy-two thousand, one hundred three".