265557 has 16 divisors (see below), whose sum is σ = 387072. Its totient is φ = 161280.

The previous prime is 265547. The next prime is 265561. The reversal of 265557 is 755562.

It is not a de Polignac number, because 265557 - 2⁴ = 265541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2028 + ... + 2154.

It is an arithmetic number, because the mean of its divisors is an integer number (24192).

2²⁶⁵⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

265557 is a deficient number, since it is larger than the sum of its proper divisors (121515).

265557 is a wasteful number, since it uses less digits than its factorization.

265557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188.

The product of its digits is 10500, while the sum is 30.

The square root of 265557 is about 515.3222292896. The cubic root of 265557 is about 64.2765538976.

It can be divided in two parts, 26555 and 7, that added together give a palindrome (26562).

The spelling of 265557 in words is "two hundred sixty-five thousand, five hundred fifty-seven".