2556419 has 2 divisors, whose sum is σ = 2556420. Its totient is φ = 2556418.

The previous prime is 2556403. The next prime is 2556451. The reversal of 2556419 is 9146552.

It is a happy number.

It is an a-pointer prime, because the next prime (2556451) can be obtained adding 2556419 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2556419 - 2⁴ = 2556403 is a prime.

It is a super-2 number, since 2×2556419² = 13070556207122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2556019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278209 + 1278210.

It is an arithmetic number, because the mean of its divisors is an integer number (1278210).

2^2556419 is an apocalyptic number.

2556419 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556419 is an equidigital number, since it uses as much as digits as its factorization.

2556419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 2556419 is about 1598.8805458820. The cubic root of 2556419 is about 136.7342603040.

The spelling of 2556419 in words is "two million, five hundred fifty-six thousand, four hundred nineteen".