2023257 has 4 divisors (see below), whose sum is σ = 2697680. Its totient is φ = 1348836.

The previous prime is 2023223. The next prime is 2023261. The reversal of 2023257 is 7523202.

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 not a de Polignac number, because 2023257 - 2⁸ = 2023001 is a prime.

It is a d-powerful number, because it can be written as 2³ + 0 + 2¹⁵ + 3⁷ + 2¹⁵ + 5⁹ + 7⁴ .

It is a D-number.

It is a Duffinian number.

2023257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2023207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337207 + ... + 337212.

It is an arithmetic number, because the mean of its divisors is an integer number (674420).

2^2023257 is an apocalyptic number.

It is an amenable number.

2023257 is a deficient number, since it is larger than the sum of its proper divisors (674423).

2023257 is an equidigital number, since it uses as much as digits as its factorization.

2023257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674422.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 2023257 is about 1422.4123874601. The cubic root of 2023257 is about 126.4785905328.

Adding to 2023257 its reverse (7523202), we get a palindrome (9546459).

Subtracting 2023257 from its reverse (7523202), we obtain a palindrome (5499945).

The spelling of 2023257 in words is "two million, twenty-three thousand, two hundred fifty-seven".