2206257 has 4 divisors (see below), whose sum is σ = 2941680. Its totient is φ = 1470836.

The previous prime is 2206249. The next prime is 2206283. The reversal of 2206257 is 7526022.

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 2206257 - 2³ = 2206249 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2206207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367707 + ... + 367712.

It is an arithmetic number, because the mean of its divisors is an integer number (735420).

2^2206257 is an apocalyptic number.

It is an amenable number.

2206257 is a deficient number, since it is larger than the sum of its proper divisors (735423).

2206257 is an equidigital number, since it uses as much as digits as its factorization.

2206257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735422.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 2206257 is about 1485.3474341042. The cubic root of 2206257 is about 130.1823279877.

The spelling of 2206257 in words is "two million, two hundred six thousand, two hundred fifty-seven".