520450004 has 6 divisors (see below), whose sum is σ = 910787514. Its totient is φ = 260225000.

The previous prime is 520449977. The next prime is 520450009. The reversal of 520450004 is 400054025.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 372876100 + 147573904 = 19310^2 + 12148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520450009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65056247 + ... + 65056254.

It is an arithmetic number, because the mean of its divisors is an integer number (151797919).

Almost surely, 2^520450004 is an apocalyptic number.

It is an amenable number.

520450004 is a deficient number, since it is larger than the sum of its proper divisors (390337510).

520450004 is a wasteful number, since it uses less digits than its factorization.

520450004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130112505 (or 130112503 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 520450004 is about 22813.3733586245. The cubic root of 520450004 is about 804.3770518453.

The spelling of 520450004 in words is "five hundred twenty million, four hundred fifty thousand, four".