2164497 has 4 divisors (see below), whose sum is σ = 2886000. Its totient is φ = 1442996.

The previous prime is 2164493. The next prime is 2164501. The reversal of 2164497 is 7944612.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2164493) and next prime (2164501).

It is a cyclic number.

It is not a de Polignac number, because 2164497 - 2² = 2164493 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 6 + 4⁵ + 4⁸ + 9³ + 7² .

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2164493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360747 + ... + 360752.

It is an arithmetic number, because the mean of its divisors is an integer number (721500).

2^2164497 is an apocalyptic number.

It is an amenable number.

2164497 is a deficient number, since it is larger than the sum of its proper divisors (721503).

2164497 is an equidigital number, since it uses as much as digits as its factorization.

2164497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721502.

The product of its digits is 12096, while the sum is 33.

The square root of 2164497 is about 1471.2229606691. Note that the first 3 decimals coincide. The cubic root of 2164497 is about 129.3557274846.

The spelling of 2164497 in words is "two million, one hundred sixty-four thousand, four hundred ninety-seven".