1165257 has 12 divisors (see below), whose sum is σ = 1722864. Its totient is φ = 758520.

The previous prime is 1165223. The next prime is 1165273. The reversal of 1165257 is 7525611.

1165257 is a `hidden beast` number, since 1 + 1 + 652 + 5 + 7 = 666.

It is not a de Polignac number, because 1165257 - 2⁶ = 1165193 is a prime.

1165257 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165257.

It is not an unprimeable number, because it can be changed into a prime (1165207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1119 + ... + 1892.

It is an arithmetic number, because the mean of its divisors is an integer number (143572).

2^1165257 is an apocalyptic number.

It is an amenable number.

1165257 is a deficient number, since it is larger than the sum of its proper divisors (557607).

1165257 is a wasteful number, since it uses less digits than its factorization.

1165257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060 (or 3057 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 1165257 is about 1079.4707036321. The cubic root of 1165257 is about 105.2302430554.

The spelling of 1165257 in words is "one million, one hundred sixty-five thousand, two hundred fifty-seven".