520378 has 4 divisors (see below), whose sum is σ = 780570. Its totient is φ = 260188.

The previous prime is 520369. The next prime is 520379. The reversal of 520378 is 873025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 413449 + 106929 = 643^2 + 327^2 .

It is not an unprimeable number, because it can be changed into a prime (520379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130093 + ... + 130096.

2⁵²⁰³⁷⁸ is an apocalyptic number.

520378 is a deficient number, since it is larger than the sum of its proper divisors (260192).

520378 is a wasteful number, since it uses less digits than its factorization.

520378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260191.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 520378 is about 721.3723033219. The cubic root of 520378 is about 80.4339955079.

It can be divided in two parts, 520 and 378, that added together give a palindrome (898).

The spelling of 520378 in words is "five hundred twenty thousand, three hundred seventy-eight".