2556353 has 4 divisors (see below), whose sum is σ = 2638848. Its totient is φ = 2473860.

The previous prime is 2556331. The next prime is 2556373. The reversal of 2556353 is 3536552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2556353 - 2¹⁸ = 2294209 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 5³ + 5⁵ + 6⁴ + 3¹⁰ + 5⁹ + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41201 + ... + 41262.

It is an arithmetic number, because the mean of its divisors is an integer number (659712).

2^2556353 is an apocalyptic number.

It is an amenable number.

2556353 is a deficient number, since it is larger than the sum of its proper divisors (82495).

2556353 is an equidigital number, since it uses as much as digits as its factorization.

2556353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82494.

The product of its digits is 13500, while the sum is 29.

The square root of 2556353 is about 1598.8599063082. The cubic root of 2556353 is about 136.7330835878.

The spelling of 2556353 in words is "two million, five hundred fifty-six thousand, three hundred fifty-three".