380561 has 4 divisors (see below), whose sum is σ = 382272. Its totient is φ = 378852.

The previous prime is 380557. The next prime is 380563. The reversal of 380561 is 165083.

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.

It is a cyclic number.

It is not a de Polignac number, because 380561 - 2² = 380557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380563) 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, 461 + ... + 986.

It is an arithmetic number, because the mean of its divisors is an integer number (95568).

2³⁸⁰⁵⁶¹ is an apocalyptic number.

It is an amenable number.

380561 is a deficient number, since it is larger than the sum of its proper divisors (1711).

380561 is a wasteful number, since it uses less digits than its factorization.

380561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 380561 is about 616.8962635646. The cubic root of 380561 is about 72.4671908623.

The spelling of 380561 in words is "three hundred eighty thousand, five hundred sixty-one".