51440211301 has 4 divisors (see below), whose sum is σ = 51780875104. Its totient is φ = 51099547500.

The previous prime is 51440211271. The next prime is 51440211343. The reversal of 51440211301 is 10311204415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10311204415 = 5 ⋅2062240883.

It is a cyclic number.

It is not a de Polignac number, because 51440211301 - 2¹¹ = 51440209253 is a prime.

It is a super-2 number, since 2×51440211301² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51440211391) 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, 170331675 + ... + 170331976.

It is an arithmetic number, because the mean of its divisors is an integer number (12945218776).

Almost surely, 2^51440211301 is an apocalyptic number.

It is an amenable number.

51440211301 is a deficient number, since it is larger than the sum of its proper divisors (340663803).

51440211301 is a wasteful number, since it uses less digits than its factorization.

51440211301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340663802.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 51440211301 its reverse (10311204415), we get a palindrome (61751415716).

The spelling of 51440211301 in words is "fifty-one billion, four hundred forty million, two hundred eleven thousand, three hundred one".