2261172103 has 2 divisors, whose sum is σ = 2261172104. Its totient is φ = 2261172102.

The previous prime is 2261172097. The next prime is 2261172119. The reversal of 2261172103 is 3012711622.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2261172103 is a prime.

It is a super-2 number, since 2×2261172103² = 10225798558770885218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261172163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130586051 + 1130586052.

It is an arithmetic number, because the mean of its divisors is an integer number (1130586052).

Almost surely, 2^2261172103 is an apocalyptic number.

2261172103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261172103 is an equidigital number, since it uses as much as digits as its factorization.

2261172103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2261172103 is about 47551.7833840120. The cubic root of 2261172103 is about 1312.5359463836.

Adding to 2261172103 its reverse (3012711622), we get a palindrome (5273883725).

The spelling of 2261172103 in words is "two billion, two hundred sixty-one million, one hundred seventy-two thousand, one hundred three".