55317903 has 8 divisors (see below), whose sum is σ = 73847088. Its totient is φ = 36833664.

The previous prime is 55317893. The next prime is 55317929. The reversal of 55317903 is 30971355.

55317903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55317903 - 2¹⁰ = 55316879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55317943) 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 7 ways as a sum of consecutive naturals, for example, 8250 + ... + 13367.

It is an arithmetic number, because the mean of its divisors is an integer number (9230886).

Almost surely, 2^55317903 is an apocalyptic number.

55317903 is a deficient number, since it is larger than the sum of its proper divisors (18529185).

55317903 is a wasteful number, since it uses less digits than its factorization.

55317903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22473.

The product of its (nonzero) digits is 14175, while the sum is 33.

The square root of 55317903 is about 7437.6006211681. The cubic root of 55317903 is about 381.0265479810.

The spelling of 55317903 in words is "fifty-five million, three hundred seventeen thousand, nine hundred three".