521314004 has 6 divisors (see below), whose sum is σ = 912299514. Its totient is φ = 260657000.

The previous prime is 521313997. The next prime is 521314019. The reversal of 521314004 is 400413125.

It can be written as a sum of positive squares in only one way, i.e., 468722500 + 52591504 = 21650^2 + 7252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65164247 + ... + 65164254.

It is an arithmetic number, because the mean of its divisors is an integer number (152049919).

Almost surely, 2^521314004 is an apocalyptic number.

It is an amenable number.

521314004 is a deficient number, since it is larger than the sum of its proper divisors (390985510).

521314004 is a wasteful number, since it uses less digits than its factorization.

521314004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130328505 (or 130328503 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 521314004 is about 22832.3017674522. The cubic root of 521314004 is about 804.8219216962.

Adding to 521314004 its reverse (400413125), we get a palindrome (921727129).

The spelling of 521314004 in words is "five hundred twenty-one million, three hundred fourteen thousand, four".