521300054 has 8 divisors (see below), whose sum is σ = 853036488. Its totient is φ = 236954560.

The previous prime is 521299981. The next prime is 521300057. The reversal of 521300054 is 450003125.

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

It is a junction number, because it is equal to n+sod(n) for n = 521299999 and 521300035.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521300057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11847707 + ... + 11847750.

It is an arithmetic number, because the mean of its divisors is an integer number (106629561).

Almost surely, 2^521300054 is an apocalyptic number.

521300054 is a deficient number, since it is larger than the sum of its proper divisors (331736434).

521300054 is a wasteful number, since it uses less digits than its factorization.

521300054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23695470.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 521300054 is about 22831.9962771546. The cubic root of 521300054 is about 804.8147428073.

Adding to 521300054 its reverse (450003125), we get a palindrome (971303179).

The spelling of 521300054 in words is "five hundred twenty-one million, three hundred thousand, fifty-four".