2258861 has 8 divisors (see below), whose sum is σ = 2480544. Its totient is φ = 2039920.

The previous prime is 2258843. The next prime is 2258863. The reversal of 2258861 is 1688522.

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 2258861 - 2¹⁰ = 2257837 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2258863) 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, 1310 + ... + 2496.

It is an arithmetic number, because the mean of its divisors is an integer number (310068).

2^2258861 is an apocalyptic number.

It is an amenable number.

2258861 is a deficient number, since it is larger than the sum of its proper divisors (221683).

2258861 is a wasteful number, since it uses less digits than its factorization.

2258861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its digits is 7680, while the sum is 32.

The square root of 2258861 is about 1502.9507643300. The cubic root of 2258861 is about 131.2088620885.

The spelling of 2258861 in words is "two million, two hundred fifty-eight thousand, eight hundred sixty-one".