365381 has 4 divisors (see below), whose sum is σ = 386892. Its totient is φ = 343872.

The previous prime is 365377. The next prime is 365411. The reversal of 365381 is 183563.

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 148225 + 217156 = 385^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 365381 - 2² = 365377 is a prime.

It is a super-2 number, since 2×365381² = 267006550322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 365381.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 365381.

It is not an unprimeable number, because it can be changed into a prime (362381) 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, 10730 + ... + 10763.

It is an arithmetic number, because the mean of its divisors is an integer number (96723).

2³⁶⁵³⁸¹ is an apocalyptic number.

It is an amenable number.

365381 is a deficient number, since it is larger than the sum of its proper divisors (21511).

365381 is a wasteful number, since it uses less digits than its factorization.

365381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21510.

The product of its digits is 2160, while the sum is 26.

The square root of 365381 is about 604.4675342812. The cubic root of 365381 is about 71.4905524870.

The spelling of 365381 in words is "three hundred sixty-five thousand, three hundred eighty-one".