2499560 has 64 divisors (see below), whose sum is σ = 6566400. Its totient is φ = 838656.

The previous prime is 2499551. The next prime is 2499577. The reversal of 2499560 is 659942.

It is a Cunningham number, because it is equal to 1581²-1.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2499560.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22064 + ... + 22176.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2^2499560 is an apocalyptic number.

2499560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2499560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3283200).

2499560 is an abundant number, since it is smaller than the sum of its proper divisors (4066840).

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

2499560 is a wasteful number, since it uses less digits than its factorization.

2499560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2499560 is about 1580.9996837444. Note that the first 3 decimals coincide. The cubic root of 2499560 is about 135.7129180709.

The spelling of 2499560 in words is "two million, four hundred ninety-nine thousand, five hundred sixty".