2559998 has 8 divisors (see below), whose sum is σ = 4388592. Its totient is φ = 1097136.

The previous prime is 2559989. The next prime is 2560021. The reversal of 2559998 is 8999552.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91415 + ... + 91442.

It is an arithmetic number, because the mean of its divisors is an integer number (548574).

2^2559998 is an apocalyptic number.

2559998 is a deficient number, since it is larger than the sum of its proper divisors (1828594).

2559998 is a wasteful number, since it uses less digits than its factorization.

2559998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182866.

The product of its digits is 291600, while the sum is 47.

The square root of 2559998 is about 1599.9993749999. Note that the first 3 decimals coincide. The cubic root of 2559998 is about 136.7980401096.

The spelling of 2559998 in words is "two million, five hundred fifty-nine thousand, nine hundred ninety-eight".