2651409 has 12 divisors (see below), whose sum is σ = 3857152. Its totient is φ = 1755000.

The previous prime is 2651387. The next prime is 2651413. The reversal of 2651409 is 9041562.

2651409 is a `hidden beast` number, since 2 + 651 + 4 + 0 + 9 = 666.

It is not a de Polignac number, because 2651409 - 2⁵ = 2651377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2651419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384 + ... + 2334.

2^2651409 is an apocalyptic number.

It is an amenable number.

2651409 is a deficient number, since it is larger than the sum of its proper divisors (1205743).

2651409 is a wasteful number, since it uses less digits than its factorization.

2651409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 2105 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2651409 is about 1628.3147730092. The cubic root of 2651409 is about 138.4072719680.

The spelling of 2651409 in words is "two million, six hundred fifty-one thousand, four hundred nine".