520104254 has 4 divisors (see below), whose sum is σ = 780156384. Its totient is φ = 260052126.

The previous prime is 520104253. The next prime is 520104257. The reversal of 520104254 is 452401025.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520104253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130026062 + ... + 130026065.

It is an arithmetic number, because the mean of its divisors is an integer number (195039096).

Almost surely, 2^520104254 is an apocalyptic number.

520104254 is a deficient number, since it is larger than the sum of its proper divisors (260052130).

520104254 is a wasteful number, since it uses less digits than its factorization.

520104254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260052129.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 520104254 is about 22805.7943075877. The cubic root of 520104254 is about 804.1988887349.

Adding to 520104254 its reverse (452401025), we get a palindrome (972505279).

The spelling of 520104254 in words is "five hundred twenty million, one hundred four thousand, two hundred fifty-four".