2557519 has 2 divisors, whose sum is σ = 2557520. Its totient is φ = 2557518.

The previous prime is 2557517. The next prime is 2557553. The reversal of 2557519 is 9157552.

2557519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (2557553) can be obtained adding 2557519 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2557519 - 2¹ = 2557517 is a prime.

It is a super-2 number, since 2×2557519² = 13081806870722, which contains 22 as substring.

Together with 2557517, it forms a pair of twin primes.

It is an Ulam number.

2557519 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278759 + 1278760.

It is an arithmetic number, because the mean of its divisors is an integer number (1278760).

2^2557519 is an apocalyptic number.

2557519 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557519 is an equidigital number, since it uses as much as digits as its factorization.

2557519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 34.

The square root of 2557519 is about 1599.2244995622. The cubic root of 2557519 is about 136.7538692594.

The spelling of 2557519 in words is "two million, five hundred fifty-seven thousand, five hundred nineteen".