2108255801 has 4 divisors (see below), whose sum is σ = 2108505204. Its totient is φ = 2108006400.

The previous prime is 2108255797. The next prime is 2108255839. The reversal of 2108255801 is 1085528012.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 140446201 + 1967809600 = 11851^2 + 44360^2 .

It is a cyclic number.

It is not a de Polignac number, because 2108255801 - 2² = 2108255797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2108251801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111560 + ... + 129081.

It is an arithmetic number, because the mean of its divisors is an integer number (527126301).

Almost surely, 2^2108255801 is an apocalyptic number.

It is an amenable number.

2108255801 is a deficient number, since it is larger than the sum of its proper divisors (249403).

2108255801 is an equidigital number, since it uses as much as digits as its factorization.

2108255801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249402.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 2108255801 is about 45915.7467651349. The cubic root of 2108255801 is about 1282.2550987398.

The spelling of 2108255801 in words is "two billion, one hundred eight million, two hundred fifty-five thousand, eight hundred one".