2257257 has 12 divisors (see below), whose sum is σ = 3184080. Its totient is φ = 1418472.

The previous prime is 2257247. The next prime is 2257291. The reversal of 2257257 is 7527522.

It is not a de Polignac number, because 2257257 - 2⁶ = 2257193 is a prime.

2257257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2257207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11244 + ... + 11442.

It is an arithmetic number, because the mean of its divisors is an integer number (265340).

2^2257257 is an apocalyptic number.

It is an amenable number.

2257257 is a deficient number, since it is larger than the sum of its proper divisors (926823).

2257257 is an equidigital number, since it uses as much as digits as its factorization.

2257257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 221 counting only the distinct ones).

The product of its digits is 9800, while the sum is 30.

The square root of 2257257 is about 1502.4170526189. The cubic root of 2257257 is about 131.1777979299.

The spelling of 2257257 in words is "two million, two hundred fifty-seven thousand, two hundred fifty-seven".