265901 has 8 divisors (see below), whose sum is σ = 281880. Its totient is φ = 250432.

The previous prime is 265891. The next prime is 265921. The reversal of 265901 is 109562.

It can be written as a sum of positive squares in 4 ways, for example, as 126025 + 139876 = 355^2 + 374^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265901 - 2¹⁴ = 249517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (35235).

2²⁶⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

265901 is a deficient number, since it is larger than the sum of its proper divisors (15979).

265901 is a wasteful number, since it uses less digits than its factorization.

265901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 265901 is about 515.6558930139. The cubic root of 265901 is about 64.3042963331.

The spelling of 265901 in words is "two hundred sixty-five thousand, nine hundred one".