2257166 has 4 divisors (see below), whose sum is σ = 3385752. Its totient is φ = 1128582.

The previous prime is 2257139. The next prime is 2257169. The reversal of 2257166 is 6617522.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564290 + ... + 564293.

It is an arithmetic number, because the mean of its divisors is an integer number (846438).

2^2257166 is an apocalyptic number.

2257166 is a deficient number, since it is larger than the sum of its proper divisors (1128586).

2257166 is a wasteful number, since it uses less digits than its factorization.

2257166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128585.

The product of its digits is 5040, while the sum is 29.

The square root of 2257166 is about 1502.3867677799. The cubic root of 2257166 is about 131.1760351207.

The spelling of 2257166 in words is "two million, two hundred fifty-seven thousand, one hundred sixty-six".