2665451 has 4 divisors (see below), whose sum is σ = 2730504. Its totient is φ = 2600400.

The previous prime is 2665433. The next prime is 2665459. The reversal of 2665451 is 1545662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2665451 - 2⁶ = 2665387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32465 + ... + 32546.

It is an arithmetic number, because the mean of its divisors is an integer number (682626).

2^2665451 is an apocalyptic number.

2665451 is a deficient number, since it is larger than the sum of its proper divisors (65053).

2665451 is an equidigital number, since it uses as much as digits as its factorization.

2665451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65052.

The product of its digits is 7200, while the sum is 29.

The square root of 2665451 is about 1632.6208990455. The cubic root of 2665451 is about 138.6511792625.

The spelling of 2665451 in words is "two million, six hundred sixty-five thousand, four hundred fifty-one".