2451009 has 24 divisors (see below), whose sum is σ = 3801888. Its totient is φ = 1392640.

The previous prime is 2450999. The next prime is 2451011. The reversal of 2451009 is 9001542.

It is not a de Polignac number, because 2451009 - 2¹¹ = 2448961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2451079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9409 + ... + 9665.

It is an arithmetic number, because the mean of its divisors is an integer number (158412).

2^2451009 is an apocalyptic number.

It is an amenable number.

2451009 is a deficient number, since it is larger than the sum of its proper divisors (1350879).

2451009 is a wasteful number, since it uses less digits than its factorization.

2451009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2451009 is about 1565.5698642986. The cubic root of 2451009 is about 134.8284790154.

The spelling of 2451009 in words is "two million, four hundred fifty-one thousand, nine".