2557143 has 8 divisors (see below), whose sum is σ = 3788400. Its totient is φ = 1704744.

The previous prime is 2557127. The next prime is 2557169. The reversal of 2557143 is 3417552.

It is a happy number.

2557143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2557143 - 2⁴ = 2557127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 94709 = 2557143 / (2 + 5 + 5 + 7 + 1 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557843) 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 in 7 ways as a sum of consecutive naturals, for example, 47328 + ... + 47381.

It is an arithmetic number, because the mean of its divisors is an integer number (473550).

2^2557143 is an apocalyptic number.

2557143 is a deficient number, since it is larger than the sum of its proper divisors (1231257).

2557143 is an equidigital number, since it uses as much as digits as its factorization.

2557143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94718 (or 94712 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 2557143 is about 1599.1069382627. The cubic root of 2557143 is about 136.7471671945.

The spelling of 2557143 in words is "two million, five hundred fifty-seven thousand, one hundred forty-three".