1165256 has 16 divisors (see below), whose sum is σ = 2205900. Its totient is φ = 577024.

The previous prime is 1165223. The next prime is 1165273. The reversal of 1165256 is 6525611.

It can be written as a sum of positive squares in 2 ways, for example, as 1136356 + 28900 = 1066^2 + 170^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260 + ... + 1548.

2^1165256 is an apocalyptic number.

It is an amenable number.

1165256 is a deficient number, since it is larger than the sum of its proper divisors (1040644).

1165256 is a wasteful number, since it uses less digits than its factorization.

1165256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408 (or 1404 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1165256 is about 1079.4702404420. The cubic root of 1165256 is about 105.2302129532.

The spelling of 1165256 in words is "one million, one hundred sixty-five thousand, two hundred fifty-six".