2557306 has 8 divisors (see below), whose sum is σ = 3848544. Its totient is φ = 1274460.

The previous prime is 2557297. The next prime is 2557333. The reversal of 2557306 is 6037552.

2557306 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 an Ulam number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1270 + ... + 2593.

It is an arithmetic number, because the mean of its divisors is an integer number (481068).

2^2557306 is an apocalyptic number.

2557306 is a deficient number, since it is larger than the sum of its proper divisors (1291238).

2557306 is a wasteful number, since it uses less digits than its factorization.

2557306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 2557306 is about 1599.1579033979. The cubic root of 2557306 is about 136.7500726916.

The spelling of 2557306 in words is "two million, five hundred fifty-seven thousand, three hundred six".