2258523 has 10 divisors (see below), whose sum is σ = 3373964. Its totient is φ = 1505628.

The previous prime is 2258521. The next prime is 2258527. The reversal of 2258523 is 3258522.

It is not a de Polignac number, because 2258523 - 2¹ = 2258521 is a prime.

It is a super-2 number, since 2×2258523² = 10201852283058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

2258523 is a lucky number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (2258521) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13861 + ... + 14022.

2^2258523 is an apocalyptic number.

2258523 is a deficient number, since it is larger than the sum of its proper divisors (1115441).

2258523 is an equidigital number, since it uses as much as digits as its factorization.

2258523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27895 (or 27886 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 2258523 is about 1502.8383146566. The cubic root of 2258523 is about 131.2023173731.

Subtracting 2258523 from its reverse (3258522), we obtain a palindrome (999999).

The spelling of 2258523 in words is "two million, two hundred fifty-eight thousand, five hundred twenty-three".