2499761 has 4 divisors (see below), whose sum is σ = 2727024. Its totient is φ = 2272500.

The previous prime is 2499751. The next prime is 2499779. The reversal of 2499761 is 1679942.

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 2499761 - 2¹⁰ = 2498737 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2499751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113615 + ... + 113636.

It is an arithmetic number, because the mean of its divisors is an integer number (681756).

2^2499761 is an apocalyptic number.

It is an amenable number.

2499761 is a deficient number, since it is larger than the sum of its proper divisors (227263).

2499761 is a wasteful number, since it uses less digits than its factorization.

2499761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227262.

The product of its digits is 27216, while the sum is 38.

The square root of 2499761 is about 1581.0632498417. The cubic root of 2499761 is about 135.7165557198.

The spelling of 2499761 in words is "two million, four hundred ninety-nine thousand, seven hundred sixty-one".