2557441 has 2 divisors, whose sum is σ = 2557442. Its totient is φ = 2557440.

The previous prime is 2557433. The next prime is 2557447. The reversal of 2557441 is 1447552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1635841 + 921600 = 1279^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557441 - 2³ = 2557433 is a prime.

It is not a weakly prime, because it can be changed into another prime (2557447) 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, 1278720 + 1278721.

It is an arithmetic number, because the mean of its divisors is an integer number (1278721).

2^2557441 is an apocalyptic number.

It is an amenable number.

2557441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557441 is an equidigital number, since it uses as much as digits as its factorization.

2557441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 28.

The square root of 2557441 is about 1599.2001125563. The cubic root of 2557441 is about 136.7524789915.

The spelling of 2557441 in words is "two million, five hundred fifty-seven thousand, four hundred forty-one".