2509997 has 4 divisors (see below), whose sum is σ = 2868576. Its totient is φ = 2151420.

The previous prime is 2509993. The next prime is 2510017. The reversal of 2509997 is 7999052.

2509997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2509997 - 2² = 2509993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179279 + ... + 179292.

It is an arithmetic number, because the mean of its divisors is an integer number (717144).

2^2509997 is an apocalyptic number.

It is an amenable number.

2509997 is a deficient number, since it is larger than the sum of its proper divisors (358579).

2509997 is an equidigital number, since it uses as much as digits as its factorization.

2509997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358578.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 2509997 is about 1584.2970049836. The cubic root of 2509997 is about 135.9015471133.

The spelling of 2509997 in words is "two million, five hundred nine thousand, nine hundred ninety-seven".