2261617 has 2 divisors, whose sum is σ = 2261618. Its totient is φ = 2261616.

The previous prime is 2261603. The next prime is 2261621. The reversal of 2261617 is 7161622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1846881 + 414736 = 1359^2 + 644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2261617 is a prime.

It is a super-2 number, since 2×2261617² = 10229822909378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2261591 and 2261600.

It is not a weakly prime, because it can be changed into another prime (2261117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130808 + 1130809.

It is an arithmetic number, because the mean of its divisors is an integer number (1130809).

2^2261617 is an apocalyptic number.

It is an amenable number.

2261617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261617 is an equidigital number, since it uses as much as digits as its factorization.

2261617 is an evil number, because the sum of its binary digits is even.

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

The square root of 2261617 is about 1503.8673478735. The cubic root of 2261617 is about 131.2622023425.

The spelling of 2261617 in words is "two million, two hundred sixty-one thousand, six hundred seventeen".