2521798 has 4 divisors (see below), whose sum is σ = 3782700. Its totient is φ = 1260898.

The previous prime is 2521769. The next prime is 2521807. The reversal of 2521798 is 8971252.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630448 + ... + 630451.

It is an arithmetic number, because the mean of its divisors is an integer number (945675).

2^2521798 is an apocalyptic number.

2521798 is a deficient number, since it is larger than the sum of its proper divisors (1260902).

2521798 is a wasteful number, since it uses less digits than its factorization.

2521798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260901.

The product of its digits is 10080, while the sum is 34.

The square root of 2521798 is about 1588.0170024279. The cubic root of 2521798 is about 136.1141990630.

The spelling of 2521798 in words is "two million, five hundred twenty-one thousand, seven hundred ninety-eight".