2457009 has 6 divisors (see below), whose sum is σ = 3549026. Its totient is φ = 1638000.

The previous prime is 2457001. The next prime is 2457011. The reversal of 2457009 is 9007542.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 23409 = 1560^2 + 153^2 .

It is not a de Polignac number, because 2457009 - 2³ = 2457001 is a prime.

It is a Duffinian number.

2457009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2457001) 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 5 ways as a sum of consecutive naturals, for example, 136492 + ... + 136509.

2^2457009 is an apocalyptic number.

It is an amenable number.

2457009 is a deficient number, since it is larger than the sum of its proper divisors (1092017).

2457009 is a wasteful number, since it uses less digits than its factorization.

2457009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273007 (or 273004 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2457009 is about 1567.4849281572. The cubic root of 2457009 is about 134.9384081178.

The spelling of 2457009 in words is "two million, four hundred fifty-seven thousand, nine".