2290857 has 4 divisors (see below), whose sum is σ = 3054480. Its totient is φ = 1527236.

The previous prime is 2290843. The next prime is 2290861. The reversal of 2290857 is 7580922.

2290857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2290857 - 2¹¹ = 2288809 is a prime.

It is a D-number.

2290857 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2290817) 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 3 ways as a sum of consecutive naturals, for example, 381807 + ... + 381812.

It is an arithmetic number, because the mean of its divisors is an integer number (763620).

2^2290857 is an apocalyptic number.

It is an amenable number.

2290857 is a deficient number, since it is larger than the sum of its proper divisors (763623).

2290857 is an equidigital number, since it uses as much as digits as its factorization.

2290857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763622.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 2290857 is about 1513.5577293252. The cubic root of 2290857 is about 131.8254695211.

The spelling of 2290857 in words is "two million, two hundred ninety thousand, eight hundred fifty-seven".