2557013 has 2 divisors, whose sum is σ = 2557014. Its totient is φ = 2557012.

The previous prime is 2557007. The next prime is 2557063. The reversal of 2557013 is 3107552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2502724 + 54289 = 1582^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557013 - 2⁴ = 2556997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2557013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278506 + 1278507.

It is an arithmetic number, because the mean of its divisors is an integer number (1278507).

2^2557013 is an apocalyptic number.

It is an amenable number.

2557013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557013 is an equidigital number, since it uses as much as digits as its factorization.

2557013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 2557013 is about 1599.0662900580. The cubic root of 2557013 is about 136.7448498384.

The spelling of 2557013 in words is "two million, five hundred fifty-seven thousand, thirteen".