365281 has 4 divisors (see below), whose sum is σ = 417472. Its totient is φ = 313092.

The previous prime is 365257. The next prime is 365291. The reversal of 365281 is 182563.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 182563 = 17 ⋅10739.

It is a cyclic number.

It is not a de Polignac number, because 365281 - 2⁵ = 365249 is a prime.

It is a super-2 number, since 2×365281² = 266860417922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁹ + 6⁷ + 2¹⁵ + 5³ + 8⁵ + 1 .

It is a Duffinian 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, 26085 + ... + 26098.

It is an arithmetic number, because the mean of its divisors is an integer number (104368).

2³⁶⁵²⁸¹ is an apocalyptic number.

It is an amenable number.

365281 is a deficient number, since it is larger than the sum of its proper divisors (52191).

365281 is an equidigital number, since it uses as much as digits as its factorization.

365281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52190.

The product of its digits is 1440, while the sum is 25.

The square root of 365281 is about 604.3848111923. The cubic root of 365281 is about 71.4840298823.

It can be divided in two parts, 365 and 281, that added together give a palindrome (646).

The spelling of 365281 in words is "three hundred sixty-five thousand, two hundred eighty-one".