2551578 has 16 divisors (see below), whose sum is σ = 5131200. Its totient is φ = 845856.

The previous prime is 2551559. The next prime is 2551603. The reversal of 2551578 is 8751552.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 126 + ... + 2262.

It is an arithmetic number, because the mean of its divisors is an integer number (320700).

2^2551578 is an apocalyptic number.

2551578 is an abundant number, since it is smaller than the sum of its proper divisors (2579622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2551578 is a wasteful number, since it uses less digits than its factorization.

2551578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341.

The product of its digits is 14000, while the sum is 33.

The square root of 2551578 is about 1597.3659568177. The cubic root of 2551578 is about 136.6478961596.

The spelling of 2551578 in words is "two million, five hundred fifty-one thousand, five hundred seventy-eight".