361145 has 4 divisors (see below), whose sum is σ = 433380. Its totient is φ = 288912.

The previous prime is 361111. The next prime is 361159. The reversal of 361145 is 541163.

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 87616 + 273529 = 296^2 + 523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361145 is a prime.

It is a super-2 number, since 2×361145² = 260851422050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36110 + ... + 36119.

It is an arithmetic number, because the mean of its divisors is an integer number (108345).

2³⁶¹¹⁴⁵ is an apocalyptic number.

It is an amenable number.

361145 is a deficient number, since it is larger than the sum of its proper divisors (72235).

361145 is an equidigital number, since it uses as much as digits as its factorization.

361145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72234.

The product of its digits is 360, while the sum is 20.

The square root of 361145 is about 600.9534091758. The cubic root of 361145 is about 71.2132055841.

The spelling of 361145 in words is "three hundred sixty-one thousand, one hundred forty-five".