1275765 has 16 divisors (see below), whose sum is σ = 2161728. Its totient is φ = 640256.

The previous prime is 1275751. The next prime is 1275779. The reversal of 1275765 is 5675721.

It is an interprime number because it is at equal distance from previous prime (1275751) and next prime (1275779).

It is a cyclic number.

It is not a de Polignac number, because 1275765 - 2⁴ = 1275749 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2247 + ... + 2756.

It is an arithmetic number, because the mean of its divisors is an integer number (135108).

2^1275765 is an apocalyptic number.

1275765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275765 is a deficient number, since it is larger than the sum of its proper divisors (885963).

1275765 is a wasteful number, since it uses less digits than its factorization.

1275765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028.

The product of its digits is 14700, while the sum is 33.

The square root of 1275765 is about 1129.4976759604. The cubic root of 1275765 is about 108.4568269554.

The spelling of 1275765 in words is "one million, two hundred seventy-five thousand, seven hundred sixty-five".