2509612 has 24 divisors (see below), whose sum is σ = 5128704. Its totient is φ = 1052112.

The previous prime is 2509597. The next prime is 2509613. The reversal of 2509612 is 2169052.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2509613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363 + ... + 2269.

It is an arithmetic number, because the mean of its divisors is an integer number (213696).

2^2509612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2509612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2564352).

2509612 is an abundant number, since it is smaller than the sum of its proper divisors (2619092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2509612 is a wasteful number, since it uses less digits than its factorization.

2509612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1963 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2509612 is about 1584.1754953287. The cubic root of 2509612 is about 135.8945982642.

The spelling of 2509612 in words is "two million, five hundred nine thousand, six hundred twelve".