2006257 has 4 divisors (see below), whose sum is σ = 2188656. Its totient is φ = 1823860.

The previous prime is 2006239. The next prime is 2006273. The reversal of 2006257 is 7526002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2006257 - 2¹¹ = 2004209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2006287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91183 + ... + 91204.

It is an arithmetic number, because the mean of its divisors is an integer number (547164).

2^2006257 is an apocalyptic number.

It is an amenable number.

2006257 is a deficient number, since it is larger than the sum of its proper divisors (182399).

2006257 is a wasteful number, since it uses less digits than its factorization.

2006257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182398.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 2006257 is about 1416.4240184352. The cubic root of 2006257 is about 126.1233569774.

The spelling of 2006257 in words is "two million, six thousand, two hundred fifty-seven".