2173387 has 2 divisors, whose sum is σ = 2173388. Its totient is φ = 2173386.

The previous prime is 2173363. The next prime is 2173393. The reversal of 2173387 is 7833712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2173387 - 2¹⁹ = 1649099 is a prime.

It is a super-2 number, since 2×2173387² = 9447222103538, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 7³ + 3³ + 3¹⁰ + 8 + 7⁵ .

It is not a weakly prime, because it can be changed into another prime (2173307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086693 + 1086694.

It is an arithmetic number, because the mean of its divisors is an integer number (1086694).

2^2173387 is an apocalyptic number.

2173387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173387 is an equidigital number, since it uses as much as digits as its factorization.

2173387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 2173387 is about 1474.2411607332. The cubic root of 2173387 is about 129.5325817553.

The spelling of 2173387 in words is "two million, one hundred seventy-three thousand, three hundred eighty-seven".