55819601 has 4 divisors (see below), whose sum is σ = 55959204. Its totient is φ = 55680000.

The previous prime is 55819571. The next prime is 55819607. The reversal of 55819601 is 10691855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10691855 = 5 ⋅2138371.

It can be written as a sum of positive squares in 2 ways, for example, as 39627025 + 16192576 = 6295^2 + 4024^2 .

It is a cyclic number.

It is not a de Polignac number, because 55819601 - 2¹⁰ = 55818577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55819607) 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, 69200 + ... + 70001.

It is an arithmetic number, because the mean of its divisors is an integer number (13989801).

Almost surely, 2^55819601 is an apocalyptic number.

It is an amenable number.

55819601 is a deficient number, since it is larger than the sum of its proper divisors (139603).

55819601 is a wasteful number, since it uses less digits than its factorization.

55819601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139602.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 55819601 is about 7471.2516354357. The cubic root of 55819601 is about 382.1749721535.

The spelling of 55819601 in words is "fifty-five million, eight hundred nineteen thousand, six hundred one".