51023312401 has 4 divisors (see below), whose sum is σ = 53241717312. Its totient is φ = 48804907492.

The previous prime is 51023312399. The next prime is 51023312429. The reversal of 51023312401 is 10421332015.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 51023312401 - 2¹ = 51023312399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51023312441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109202421 + ... + 1109202466.

It is an arithmetic number, because the mean of its divisors is an integer number (13310429328).

Almost surely, 2^51023312401 is an apocalyptic number.

It is an amenable number.

51023312401 is a deficient number, since it is larger than the sum of its proper divisors (2218404911).

51023312401 is a wasteful number, since it uses less digits than its factorization.

51023312401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218404910.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 51023312401 its reverse (10421332015), we get a palindrome (61444644416).

The spelling of 51023312401 in words is "fifty-one billion, twenty-three million, three hundred twelve thousand, four hundred one".