2205257 has 8 divisors (see below), whose sum is σ = 2368296. Its totient is φ = 2045952.

The previous prime is 2205251. The next prime is 2205283. The reversal of 2205257 is 7525022.

It can be written as a sum of positive squares in 4 ways, for example, as 657721 + 1547536 = 811^2 + 1244^2 .

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 2205257 - 2⁸ = 2205001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (296037).

2^2205257 is an apocalyptic number.

It is an amenable number.

2205257 is a deficient number, since it is larger than the sum of its proper divisors (163039).

2205257 is a wasteful number, since it uses less digits than its factorization.

2205257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 2205257 is about 1485.0107743717. The cubic root of 2205257 is about 130.1626563596.

The spelling of 2205257 in words is "two million, two hundred five thousand, two hundred fifty-seven".