2956509 has 12 divisors (see below), whose sum is σ = 4335136. Its totient is φ = 1941192.

The previous prime is 2956493. The next prime is 2956523. The reversal of 2956509 is 9056592.

It is not a de Polignac number, because 2956509 - 2⁴ = 2956493 is a prime.

It is a Duffinian number.

2956509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2954509) 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 11 ways as a sum of consecutive naturals, for example, 1849 + ... + 3054.

2^2956509 is an apocalyptic number.

It is an amenable number.

2956509 is a deficient number, since it is larger than the sum of its proper divisors (1378627).

2956509 is a wasteful number, since it uses less digits than its factorization.

2956509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4976 (or 4973 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 2956509 is about 1719.4502028265. The cubic root of 2956509 is about 143.5246187128.

The spelling of 2956509 in words is "two million, nine hundred fifty-six thousand, five hundred nine".