2047257 has 6 divisors (see below), whose sum is σ = 2957162. Its totient is φ = 1364832.

The previous prime is 2047249. The next prime is 2047289. The reversal of 2047257 is 7527402.

It can be written as a sum of positive squares in only one way, i.e., 1498176 + 549081 = 1224^2 + 741^2 .

It is not a de Polignac number, because 2047257 - 2³ = 2047249 is a prime.

It is a super-2 number, since 2×2047257² = 8382522448098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2047257.

It is not an unprimeable number, because it can be changed into a prime (2047217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113728 + ... + 113745.

2^2047257 is an apocalyptic number.

It is an amenable number.

2047257 is a deficient number, since it is larger than the sum of its proper divisors (909905).

2047257 is a wasteful number, since it uses less digits than its factorization.

2047257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227479 (or 227476 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 2047257 is about 1430.8238885342. The cubic root of 2047257 is about 126.9767250215.

It can be divided in two parts, 2047 and 257, that added together give a square (2304 = 48²).

The spelling of 2047257 in words is "two million, forty-seven thousand, two hundred fifty-seven".