51040512001 has 4 divisors (see below), whose sum is σ = 51052252500. Its totient is φ = 51028771504.

The previous prime is 51040511987. The next prime is 51040512007. The reversal of 51040512001 is 10021504015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12182640625 + 38857871376 = 110375^2 + 197124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51040512001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51040512001.

It is not an unprimeable number, because it can be changed into a prime (51040512007) 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, 5863726 + ... + 5872423.

It is an arithmetic number, because the mean of its divisors is an integer number (12763063125).

Almost surely, 2^51040512001 is an apocalyptic number.

It is an amenable number.

51040512001 is a deficient number, since it is larger than the sum of its proper divisors (11740499).

51040512001 is a wasteful number, since it uses less digits than its factorization.

51040512001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11740498.

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

The spelling of 51040512001 in words is "fifty-one billion, forty million, five hundred twelve thousand, one".