2557047 has 8 divisors (see below), whose sum is σ = 3492720. Its totient is φ = 1663040.

The previous prime is 2557013. The next prime is 2557063. The reversal of 2557047 is 7407552.

2557047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2557047 - 2⁸ = 2556791 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557007) 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, 10272 + ... + 10517.

It is an arithmetic number, because the mean of its divisors is an integer number (436590).

2^2557047 is an apocalyptic number.

2557047 is a deficient number, since it is larger than the sum of its proper divisors (935673).

2557047 is a wasteful number, since it uses less digits than its factorization.

2557047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20833.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 2557047 is about 1599.0769212267. The cubic root of 2557047 is about 136.7454559237.

The spelling of 2557047 in words is "two million, five hundred fifty-seven thousand, forty-seven".