2166453 has 8 divisors (see below), whose sum is σ = 3209600. Its totient is φ = 1444284.

The previous prime is 2166449. The next prime is 2166457. The reversal of 2166453 is 3546612.

2166453 is a `hidden beast` number, since 2 + 16 + 645 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (2166449) and next prime (2166457).

It is not a de Polignac number, because 2166453 - 2² = 2166449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 80239 = 2166453 / (2 + 1 + 6 + 6 + 4 + 5 + 3).

It is a d-powerful number, because it can be written as 2¹⁹ + 1 + 6² + 6⁶ + 4⁵ + 5³ + 3¹³ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40093 + ... + 40146.

It is an arithmetic number, because the mean of its divisors is an integer number (401200).

2^2166453 is an apocalyptic number.

It is an amenable number.

2166453 is a deficient number, since it is larger than the sum of its proper divisors (1043147).

2166453 is an equidigital number, since it uses as much as digits as its factorization.

2166453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80248 (or 80242 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2166453 is about 1471.8875636406. The cubic root of 2166453 is about 129.3946808959.

The spelling of 2166453 in words is "two million, one hundred sixty-six thousand, four hundred fifty-three".