3555498385 has 4 divisors (see below), whose sum is σ = 4266598068. Its totient is φ = 2844398704.

The previous prime is 3555498377. The next prime is 3555498389. The reversal of 3555498385 is 5838945553.

It is a Cunningham number, because it is equal to 59628²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5838945553 = 7 ⋅834135079.

It can be written as a sum of positive squares in 2 ways, for example, as 1279922176 + 2275576209 = 35776^2 + 47703^2 .

It is a cyclic number.

It is not a de Polignac number, because 3555498385 - 2³ = 3555498377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3555498389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355549834 + ... + 355549843.

It is an arithmetic number, because the mean of its divisors is an integer number (1066649517).

Almost surely, 2^3555498385 is an apocalyptic number.

It is an amenable number.

3555498385 is a deficient number, since it is larger than the sum of its proper divisors (711099683).

3555498385 is an equidigital number, since it uses as much as digits as its factorization.

3555498385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711099682.

The product of its digits is 12960000, while the sum is 55.

The square root of 3555498385 is about 59628.0000083853. Note that the first 5 decimals coincide. The cubic root of 3555498385 is about 1526.2774762003.

The spelling of 3555498385 in words is "three billion, five hundred fifty-five million, four hundred ninety-eight thousand, three hundred eighty-five".