520354 has 8 divisors (see below), whose sum is σ = 795420. Its totient is φ = 255216.

The previous prime is 520349. The next prime is 520357. The reversal of 520354 is 453025.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 416025 + 104329 = 645^2 + 323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (520357) by changing a digit.

520354 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2349 + ... + 2560.

2⁵²⁰³⁵⁴ is an apocalyptic number.

520354 is a deficient number, since it is larger than the sum of its proper divisors (275066).

520354 is a wasteful number, since it uses less digits than its factorization.

520354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 520354 is about 721.3556681693. The cubic root of 520354 is about 80.4327589417.

Adding to 520354 its reverse (453025), we get a palindrome (973379).

The spelling of 520354 in words is "five hundred twenty thousand, three hundred fifty-four".