523404004 has 6 divisors (see below), whose sum is σ = 915957014. Its totient is φ = 261702000.

The previous prime is 523403999. The next prime is 523404017. The reversal of 523404004 is 400404325.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 409981504 + 113422500 = 20248^2 + 10650^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65425497 + ... + 65425504.

Almost surely, 2^523404004 is an apocalyptic number.

It is an amenable number.

523404004 is a deficient number, since it is larger than the sum of its proper divisors (392553010).

523404004 is a wasteful number, since it uses less digits than its factorization.

523404004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130851005 (or 130851003 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 523404004 is about 22878.0244776510. The cubic root of 523404004 is about 805.8960247793.

Adding to 523404004 its reverse (400404325), we get a palindrome (923808329).

The spelling of 523404004 in words is "five hundred twenty-three million, four hundred four thousand, four".