55217703 has 4 divisors (see below), whose sum is σ = 73623608. Its totient is φ = 36811800.

The previous prime is 55217681. The next prime is 55217707. The reversal of 55217703 is 30771255.

55217703 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55217703 - 2⁹ = 55217191 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 (55217707) 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, 9202948 + ... + 9202953.

It is an arithmetic number, because the mean of its divisors is an integer number (18405902).

Almost surely, 2^55217703 is an apocalyptic number.

55217703 is a deficient number, since it is larger than the sum of its proper divisors (18405905).

55217703 is a wasteful number, since it uses less digits than its factorization.

55217703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18405904.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 55217703 is about 7430.8615247493. The cubic root of 55217703 is about 380.7963516491.

Adding to 55217703 its reverse (30771255), we get a palindrome (85988958).

The spelling of 55217703 in words is "fifty-five million, two hundred seventeen thousand, seven hundred three".