2258458 has 4 divisors (see below), whose sum is σ = 3387690. Its totient is φ = 1129228.

The previous prime is 2258453. The next prime is 2258479. The reversal of 2258458 is 8548522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8548522 = 2 ⋅4274261.

It can be written as a sum of positive squares in only one way, i.e., 1857769 + 400689 = 1363^2 + 633^2 .

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁹ + 5² + 8⁵ + 4¹⁰ + 5⁸ + 8⁶ .

It is not an unprimeable number, because it can be changed into a prime (2258453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564613 + ... + 564616.

2^2258458 is an apocalyptic number.

2258458 is a deficient number, since it is larger than the sum of its proper divisors (1129232).

2258458 is a wasteful number, since it uses less digits than its factorization.

2258458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129231.

The product of its digits is 25600, while the sum is 34.

The square root of 2258458 is about 1502.8166887548. The cubic root of 2258458 is about 131.2010586991.

Subtracting 2258458 from its reverse (8548522), we obtain a square (6290064 = 2508²).

The spelling of 2258458 in words is "two million, two hundred fifty-eight thousand, four hundred fifty-eight".