2258761 has 4 divisors (see below), whose sum is σ = 2356992. Its totient is φ = 2160532.

The previous prime is 2258743. The next prime is 2258779. The reversal of 2258761 is 1678522.

2258761 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, and also an emirpimes, since its reverse is a distinct semiprime: 1678522 = 2 ⋅839261.

It is an interprime number because it is at equal distance from previous prime (2258743) and next prime (2258779).

It is a cyclic number.

It is not a de Polignac number, because 2258761 - 2¹¹ = 2256713 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49081 + ... + 49126.

It is an arithmetic number, because the mean of its divisors is an integer number (589248).

2^2258761 is an apocalyptic number.

It is an amenable number.

2258761 is a deficient number, since it is larger than the sum of its proper divisors (98231).

2258761 is an equidigital number, since it uses as much as digits as its factorization.

2258761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98230.

The product of its digits is 6720, while the sum is 31.

The square root of 2258761 is about 1502.9174960722. The cubic root of 2258761 is about 131.2069258502.

The spelling of 2258761 in words is "two million, two hundred fifty-eight thousand, seven hundred sixty-one".