2172613 has 2 divisors, whose sum is σ = 2172614. Its totient is φ = 2172612.

The previous prime is 2172587. The next prime is 2172619. The reversal of 2172613 is 3162712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1292769 + 879844 = 1137^2 + 938^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172613 - 2⁵ = 2172581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086306 + 1086307.

It is an arithmetic number, because the mean of its divisors is an integer number (1086307).

2^2172613 is an apocalyptic number.

It is an amenable number.

2172613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172613 is an equidigital number, since it uses as much as digits as its factorization.

2172613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 2172613 is about 1473.9786294245. The cubic root of 2172613 is about 129.5172032819.

Subtracting 2172613 from its reverse (3162712), we obtain a palindrome (990099).

The spelling of 2172613 in words is "two million, one hundred seventy-two thousand, six hundred thirteen".