51401266201 has 4 divisors (see below), whose sum is σ = 51662186532. Its totient is φ = 51140345872.

The previous prime is 51401266187. The next prime is 51401266211. The reversal of 51401266201 is 10266210415.

51401266201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10266210415 = 5 ⋅2053242083.

It can be written as a sum of positive squares in 2 ways, for example, as 29763150400 + 21638115801 = 172520^2 + 147099^2 .

It is a cyclic number.

It is not a de Polignac number, because 51401266201 - 2¹³ = 51401258009 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 51401266201.

It is not an unprimeable number, because it can be changed into a prime (51401266211) 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, 130459870 + ... + 130460263.

It is an arithmetic number, because the mean of its divisors is an integer number (12915546633).

Almost surely, 2^51401266201 is an apocalyptic number.

It is an amenable number.

51401266201 is a deficient number, since it is larger than the sum of its proper divisors (260920331).

51401266201 is a wasteful number, since it uses less digits than its factorization.

51401266201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260920330.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 51401266201 its reverse (10266210415), we get a palindrome (61667476616).

The spelling of 51401266201 in words is "fifty-one billion, four hundred one million, two hundred sixty-six thousand, two hundred one".