2556773 has 8 divisors (see below), whose sum is σ = 2743200. Its totient is φ = 2375568.

The previous prime is 2556761. The next prime is 2556791. The reversal of 2556773 is 3776552.

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 2556773 - 2¹² = 2552677 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 5 + 5³ + 6⁷ + 7 + 7⁴ + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556713) 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, 263 + ... + 2276.

It is an arithmetic number, because the mean of its divisors is an integer number (342900).

2^2556773 is an apocalyptic number.

It is an amenable number.

2556773 is a deficient number, since it is larger than the sum of its proper divisors (186427).

2556773 is a wasteful number, since it uses less digits than its factorization.

2556773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611.

The product of its digits is 44100, while the sum is 35.

The square root of 2556773 is about 1598.9912445039. The cubic root of 2556773 is about 136.7405714361.

The spelling of 2556773 in words is "two million, five hundred fifty-six thousand, seven hundred seventy-three".