2556553 has 8 divisors (see below), whose sum is σ = 2664000. Its totient is φ = 2450448.

The previous prime is 2556523. The next prime is 2556559. The reversal of 2556553 is 3556552.

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 2556553 - 2⁹ = 2556041 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 5³ + 5³ + 6² + 5⁷ + 5⁹ + 3⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556559) 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, 5550 + ... + 5992.

It is an arithmetic number, because the mean of its divisors is an integer number (333000).

2^2556553 is an apocalyptic number.

It is an amenable number.

2556553 is a deficient number, since it is larger than the sum of its proper divisors (107447).

2556553 is a wasteful number, since it uses less digits than its factorization.

2556553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671.

The product of its digits is 22500, while the sum is 31.

The square root of 2556553 is about 1598.9224496516. The cubic root of 2556553 is about 136.7366493321.

Subtracting 2556553 from its reverse (3556552), we obtain a palindrome (999999).

The spelling of 2556553 in words is "two million, five hundred fifty-six thousand, five hundred fifty-three".