2161417 has 2 divisors, whose sum is σ = 2161418. Its totient is φ = 2161416.

The previous prime is 2161409. The next prime is 2161427. The reversal of 2161417 is 7141612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 26896 = 1461^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 2161417 - 2³ = 2161409 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2161427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080708 + 1080709.

It is an arithmetic number, because the mean of its divisors is an integer number (1080709).

2^2161417 is an apocalyptic number.

It is an amenable number.

2161417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161417 is an equidigital number, since it uses as much as digits as its factorization.

2161417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 22.

The square root of 2161417 is about 1470.1758398233. The cubic root of 2161417 is about 129.2943422040.

The spelling of 2161417 in words is "two million, one hundred sixty-one thousand, four hundred seventeen".