2258921 has 8 divisors (see below), whose sum is σ = 2592384. Its totient is φ = 1928160.

The previous prime is 2258917. The next prime is 2258947. The reversal of 2258921 is 1298522.

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 2258921 - 2² = 2258917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2258981) 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 7 ways as a sum of consecutive naturals, for example, 1676 + ... + 2706.

It is an arithmetic number, because the mean of its divisors is an integer number (324048).

2^2258921 is an apocalyptic number.

It is an amenable number.

2258921 is a deficient number, since it is larger than the sum of its proper divisors (333463).

2258921 is a wasteful number, since it uses less digits than its factorization.

2258921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its digits is 2880, while the sum is 29.

The square root of 2258921 is about 1502.9707249311. The cubic root of 2258921 is about 131.2100238041.

The spelling of 2258921 in words is "two million, two hundred fifty-eight thousand, nine hundred twenty-one".