2498509 has 4 divisors (see below), whose sum is σ = 2690716. Its totient is φ = 2306304.

The previous prime is 2498453. The next prime is 2498521. The reversal of 2498509 is 9058942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9058942 = 2 ⋅4529471.

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 2340900 = 397^2 + 1530^2 .

It is not a de Polignac number, because 2498509 - 2⁷ = 2498381 is a prime.

It is a Duffinian number.

2498509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2498539) 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 3 ways as a sum of consecutive naturals, for example, 96084 + ... + 96109.

It is an arithmetic number, because the mean of its divisors is an integer number (672679).

2^2498509 is an apocalyptic number.

It is an amenable number.

2498509 is a deficient number, since it is larger than the sum of its proper divisors (192207).

2498509 is a wasteful number, since it uses less digits than its factorization.

2498509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192206.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2498509 is about 1580.6672641641. The cubic root of 2498509 is about 135.6938941530.

The spelling of 2498509 in words is "two million, four hundred ninety-eight thousand, five hundred nine".