2488861 has 4 divisors (see below), whose sum is σ = 2529724. Its totient is φ = 2448000.

The previous prime is 2488841. The next prime is 2488877. The reversal of 2488861 is 1688842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1688842 = 2 ⋅844421.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 1265625 = 1106^2 + 1125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2488861 is a prime.

It is a Duffinian number.

2488861 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2488861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2488841) 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, 20340 + ... + 20461.

It is an arithmetic number, because the mean of its divisors is an integer number (632431).

2^2488861 is an apocalyptic number.

It is an amenable number.

2488861 is a deficient number, since it is larger than the sum of its proper divisors (40863).

2488861 is an equidigital number, since it uses as much as digits as its factorization.

2488861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40862.

The product of its digits is 24576, while the sum is 37.

The square root of 2488861 is about 1577.6124365636. The cubic root of 2488861 is about 135.5190080586.

The spelling of 2488861 in words is "two million, four hundred eighty-eight thousand, eight hundred sixty-one".