2557245 has 8 divisors (see below), whose sum is σ = 4091616. Its totient is φ = 1363856.

The previous prime is 2557241. The next prime is 2557273. The reversal of 2557245 is 5427552.

2557245 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 2557245 - 2² = 2557241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557241) 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, 85227 + ... + 85256.

It is an arithmetic number, because the mean of its divisors is an integer number (511452).

2^2557245 is an apocalyptic number.

It is an amenable number.

2557245 is a deficient number, since it is larger than the sum of its proper divisors (1534371).

2557245 is a wasteful number, since it uses less digits than its factorization.

2557245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170491.

The product of its digits is 14000, while the sum is 30.

The square root of 2557245 is about 1599.1388307461. The cubic root of 2557245 is about 136.7489853728.

The spelling of 2557245 in words is "two million, five hundred fifty-seven thousand, two hundred forty-five".