55903717 has 4 divisors (see below), whose sum is σ = 56033856. Its totient is φ = 55773580.

The previous prime is 55903703. The next prime is 55903721. The reversal of 55903717 is 71730955.

It is a happy number.

55903717 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71730955 = 5 ⋅14346191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55903717 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 (55906717) 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, 64423 + ... + 65284.

It is an arithmetic number, because the mean of its divisors is an integer number (14008464).

Almost surely, 2^55903717 is an apocalyptic number.

It is an amenable number.

55903717 is a deficient number, since it is larger than the sum of its proper divisors (130139).

55903717 is a wasteful number, since it uses less digits than its factorization.

55903717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130138.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 55903717 is about 7476.8788274253. The cubic root of 55903717 is about 382.3668455883.

The spelling of 55903717 in words is "fifty-five million, nine hundred three thousand, seven hundred seventeen".