2545109 has 6 divisors (see below), whose sum is σ = 2960694. Its totient is φ = 2181480.

The previous prime is 2545093. The next prime is 2545117. The reversal of 2545109 is 9015452.

It can be written as a sum of positive squares in only one way, i.e., 1500625 + 1044484 = 1225^2 + 1022^2 .

It is not a de Polignac number, because 2545109 - 2⁴ = 2545093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545159) 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, 25922 + ... + 26019.

It is an arithmetic number, because the mean of its divisors is an integer number (493449).

2^2545109 is an apocalyptic number.

It is an amenable number.

2545109 is a deficient number, since it is larger than the sum of its proper divisors (415585).

2545109 is an equidigital number, since it uses as much as digits as its factorization.

2545109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51955 (or 51948 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2545109 is about 1595.3397757218. The cubic root of 2545109 is about 136.5323175726.

The spelling of 2545109 in words is "two million, five hundred forty-five thousand, one hundred nine".