2261061205 has 8 divisors (see below), whose sum is σ = 2921986872. Its totient is φ = 1669706688.

The previous prime is 2261061181. The next prime is 2261061211. The reversal of 2261061205 is 5021601622.

It can be written as a sum of positive squares in 4 ways, for example, as 293162884 + 1967898321 = 17122^2 + 44361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2261061205 - 2²¹ = 2258964053 is a prime.

It is a super-2 number, since 2×2261061205² = 10224795545512104050, which contains 22 as substring.

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 2261061205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17392714 + ... + 17392843.

It is an arithmetic number, because the mean of its divisors is an integer number (365248359).

Almost surely, 2^2261061205 is an apocalyptic number.

It is an amenable number.

2261061205 is a deficient number, since it is larger than the sum of its proper divisors (660925667).

2261061205 is a wasteful number, since it uses less digits than its factorization.

2261061205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34785575.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2261061205 is about 47550.6172935746. The cubic root of 2261061205 is about 1312.5144884871.

Adding to 2261061205 its reverse (5021601622), we get a palindrome (7282662827).

The spelling of 2261061205 in words is "two billion, two hundred sixty-one million, sixty-one thousand, two hundred five".