2561498 has 8 divisors (see below), whose sum is σ = 3849120. Its totient is φ = 1278460.

The previous prime is 2561491. The next prime is 2561513. The reversal of 2561498 is 8941652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2561498² = 13122544008008, which contains 22 as substring.

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 (2561491) 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, 1283 + ... + 2601.

It is an arithmetic number, because the mean of its divisors is an integer number (481140).

2^2561498 is an apocalyptic number.

2561498 is a deficient number, since it is larger than the sum of its proper divisors (1287622).

2561498 is a wasteful number, since it uses less digits than its factorization.

2561498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292.

The product of its digits is 17280, while the sum is 35.

The square root of 2561498 is about 1600.4680565385. The cubic root of 2561498 is about 136.8247532810.

The spelling of 2561498 in words is "two million, five hundred sixty-one thousand, four hundred ninety-eight".