2004257 has 4 divisors (see below), whose sum is σ = 2007216. Its totient is φ = 2001300.

The previous prime is 2004251. The next prime is 2004269. The reversal of 2004257 is 7524002.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7524002 = 2 ⋅3762001.

It is a cyclic number.

It is not a de Polignac number, because 2004257 - 2⁸ = 2004001 is a prime.

It is a super-2 number, since 2×2004257² = 8034092244098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2004251) 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, 98 + ... + 2004.

It is an arithmetic number, because the mean of its divisors is an integer number (501804).

2^2004257 is an apocalyptic number.

It is an amenable number.

2004257 is a deficient number, since it is larger than the sum of its proper divisors (2959).

2004257 is a wasteful number, since it uses less digits than its factorization.

2004257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 2004257 is about 1415.7178391191. The cubic root of 2004257 is about 126.0814330397.

Adding to 2004257 its reverse (7524002), we get a palindrome (9528259).

The spelling of 2004257 in words is "two million, four thousand, two hundred fifty-seven".