521150000401 has 8 divisors (see below), whose sum is σ = 539175177000. Its totient is φ = 503128456320.

The previous prime is 521150000363. The next prime is 521150000489. The reversal of 521150000401 is 104000051125.

It can be written as a sum of positive squares in 4 ways, for example, as 114585635025 + 406564365376 = 338505^2 + 637624^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521150000401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521150040401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614620 + ... + 1191661.

It is an arithmetic number, because the mean of its divisors is an integer number (67396897125).

Almost surely, 2^521150000401 is an apocalyptic number.

It is an amenable number.

521150000401 is a deficient number, since it is larger than the sum of its proper divisors (18025176599).

521150000401 is a wasteful number, since it uses less digits than its factorization.

521150000401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816259.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 521150000401 its reverse (104000051125), we get a palindrome (625150051526).

The spelling of 521150000401 in words is "five hundred twenty-one billion, one hundred fifty million, four hundred one", and thus it is an aban number.