378001 has 4 divisors (see below), whose sum is σ = 407092. Its totient is φ = 348912.

The previous prime is 377999. The next prime is 378011. The reversal of 378001 is 100873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100873 = 149 ⋅677.

It can be written as a sum of positive squares in 2 ways, for example, as 176400 + 201601 = 420^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 378001 - 2¹ = 377999 is a prime.

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 378001.

It is not an unprimeable number, because it can be changed into a prime (378011) 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, 14526 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (101773).

2³⁷⁸⁰⁰¹ is an apocalyptic number.

It is an amenable number.

378001 is a deficient number, since it is larger than the sum of its proper divisors (29091).

378001 is a wasteful number, since it uses less digits than its factorization.

378001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29090.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 378001 is about 614.8178592071. The cubic root of 378001 is about 72.3043316856.

Adding to 378001 its reverse (100873), we get a palindrome (478874).

The spelling of 378001 in words is "three hundred seventy-eight thousand, one".