2489257 has 4 divisors (see below), whose sum is σ = 2492500. Its totient is φ = 2486016.

The previous prime is 2489239. The next prime is 2489287. The reversal of 2489257 is 7529842.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1430416 + 1058841 = 1196^2 + 1029^2 .

It is a cyclic number.

It is not a de Polignac number, because 2489257 - 2¹⁹ = 1964969 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 4² + 8⁷ + 9² + 2¹⁰ + 5⁸ + 7³ .

It is a Duffinian number.

2489257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2489237) 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, 253 + ... + 2245.

It is an arithmetic number, because the mean of its divisors is an integer number (623125).

2^2489257 is an apocalyptic number.

It is an amenable number.

2489257 is a deficient number, since it is larger than the sum of its proper divisors (3243).

2489257 is a wasteful number, since it uses less digits than its factorization.

2489257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242.

The product of its digits is 40320, while the sum is 37.

The square root of 2489257 is about 1577.7379376817. The cubic root of 2489257 is about 135.5261951053.

The spelling of 2489257 in words is "two million, four hundred eighty-nine thousand, two hundred fifty-seven".