2557241 has 2 divisors, whose sum is σ = 2557242. Its totient is φ = 2557240.

The previous prime is 2557231. The next prime is 2557273. The reversal of 2557241 is 1427552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2238016 + 319225 = 1496^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557241 - 2¹⁰ = 2556217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2557241.

It is not a weakly prime, because it can be changed into another prime (2557201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278620 + 1278621.

It is an arithmetic number, because the mean of its divisors is an integer number (1278621).

2^2557241 is an apocalyptic number.

It is an amenable number.

2557241 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557241 is an equidigital number, since it uses as much as digits as its factorization.

2557241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 26.

The square root of 2557241 is about 1599.1375800725. The cubic root of 2557241 is about 136.7489140726.

The spelling of 2557241 in words is "two million, five hundred fifty-seven thousand, two hundred forty-one".