365261 has 4 divisors (see below), whose sum is σ = 393372. Its totient is φ = 337152.

The previous prime is 365257. The next prime is 365291. The reversal of 365261 is 162563.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17161 + 348100 = 131^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 365261 - 2² = 365257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14036 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (98343).

2³⁶⁵²⁶¹ is an apocalyptic number.

It is an amenable number.

365261 is a deficient number, since it is larger than the sum of its proper divisors (28111).

365261 is a wasteful number, since it uses less digits than its factorization.

365261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28110.

The product of its digits is 1080, while the sum is 23.

The square root of 365261 is about 604.3682652158. The cubic root of 365261 is about 71.4827252185.

It can be divided in two parts, 365 and 261, that added together give a palindrome (626).

The spelling of 365261 in words is "three hundred sixty-five thousand, two hundred sixty-one".