55651001603 has 4 divisors (see below), whose sum is σ = 55900557888. Its totient is φ = 55401445320.

The previous prime is 55651001573. The next prime is 55651001671. The reversal of 55651001603 is 30610015655.

55651001603 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 an emirpimes, since its reverse is a distinct semiprime: 30610015655 = 5 ⋅6122003131.

It is a cyclic number.

It is not a de Polignac number, because 55651001603 - 2¹⁰ = 55651000579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55651001603.

It is not an unprimeable number, because it can be changed into a prime (55651006603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124777808 + ... + 124778253.

It is an arithmetic number, because the mean of its divisors is an integer number (13975139472).

Almost surely, 2^55651001603 is an apocalyptic number.

55651001603 is a deficient number, since it is larger than the sum of its proper divisors (249556285).

55651001603 is a wasteful number, since it uses less digits than its factorization.

55651001603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249556284.

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 55651001603 in words is "fifty-five billion, six hundred fifty-one million, one thousand, six hundred three".