2556043 has 8 divisors (see below), whose sum is σ = 3015680.
Its totient is φ = 2120040.
The previous prime is 2556041. The next prime is 2556061. The reversal of 2556043 is 3406552.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2556043 - 21 = 2556041 is a prime.
It is a d-powerful number, because it can be written as 219 + 57 + 59 + 6 + 0 + 44 + 35 .
It is a junction number, because it is equal to n+sod(n) for n = 2555999 and 2556017.
It is not an unprimeable number, because it can be changed into a prime (2556041) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5673 + ... + 6106.
It is an arithmetic number, because the mean of its divisors is an integer number (376960).
22556043 is an apocalyptic number.
2556043 is a deficient number, since it is larger than the sum of its proper divisors (459637).
2556043 is a wasteful number, since it uses less digits than its factorization.
2556043 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11817.
The product of its (nonzero) digits is 3600, while the sum is 25.
The square root of 2556043 is about 1598.7629592907.
The cubic root of 2556043 is about 136.7275563166.
The spelling of 2556043 in words is "two million, five hundred fifty-six thousand, forty-three".