2556133 has 2 divisors, whose sum is σ = 2556134. Its totient is φ = 2556132.

The previous prime is 2556121. The next prime is 2556139. The reversal of 2556133 is 3316552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2490084 + 66049 = 1578^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556133 - 2⁵ = 2556101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2556098 and 2556107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2556139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278066 + 1278067.

It is an arithmetic number, because the mean of its divisors is an integer number (1278067).

2^2556133 is an apocalyptic number.

It is an amenable number.

2556133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556133 is an equidigital number, since it uses as much as digits as its factorization.

2556133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 25.

The square root of 2556133 is about 1598.7911058046. The cubic root of 2556133 is about 136.7291610543.

The spelling of 2556133 in words is "two million, five hundred fifty-six thousand, one hundred thirty-three".