51512212001 has 8 divisors (see below), whose sum is σ = 52903972800. Its totient is φ = 50137740400.

The previous prime is 51512211997. The next prime is 51512212019. The reversal of 51512212001 is 10021221515.

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

It is a cyclic number.

It is not a de Polignac number, because 51512212001 - 2² = 51512211997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51512212021) 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, 4316261 + ... + 4328178.

It is an arithmetic number, because the mean of its divisors is an integer number (6612996600).

Almost surely, 2^51512212001 is an apocalyptic number.

It is an amenable number.

51512212001 is a deficient number, since it is larger than the sum of its proper divisors (1391760799).

51512212001 is a wasteful number, since it uses less digits than its factorization.

51512212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8644599.

The product of its (nonzero) digits is 200, while the sum is 20.

Adding to 51512212001 its reverse (10021221515), we get a palindrome (61533433516).

The spelling of 51512212001 in words is "fifty-one billion, five hundred twelve million, two hundred twelve thousand, one".