2258749 has 4 divisors (see below), whose sum is σ = 2268000. Its totient is φ = 2249500.

The previous prime is 2258743. The next prime is 2258779. The reversal of 2258749 is 9478522.

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 2258749 - 2³ = 2258741 is a prime.

It is an Ulam number.

It is a Duffinian number.

2258749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2258741) 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 3 ways as a sum of consecutive naturals, for example, 4249 + ... + 4750.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

2^2258749 is an apocalyptic number.

It is an amenable number.

2258749 is a deficient number, since it is larger than the sum of its proper divisors (9251).

2258749 is an equidigital number, since it uses as much as digits as its factorization.

2258749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250.

The product of its digits is 40320, while the sum is 37.

The square root of 2258749 is about 1502.9135038318. The cubic root of 2258749 is about 131.2066934977.

The spelling of 2258749 in words is "two million, two hundred fifty-eight thousand, seven hundred forty-nine".