51342443522521 has 8 divisors (see below), whose sum is σ = 51346874777184. Its totient is φ = 51338012505120.

The previous prime is 51342443522479. The next prime is 51342443522551. The reversal of 51342443522521 is 12522534424315.

51342443522521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51342443522521 - 2²⁵ = 51342409968089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51342443522551) 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, 929365126 + ... + 929420368.

It is an arithmetic number, because the mean of its divisors is an integer number (6418359347148).

Almost surely, 2^{51342443522521} is an apocalyptic number.

It is an amenable number.

51342443522521 is a deficient number, since it is larger than the sum of its proper divisors (4431254663).

51342443522521 is a wasteful number, since it uses less digits than its factorization.

51342443522521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118631.

The product of its digits is 1152000, while the sum is 43.

Adding to 51342443522521 its reverse (12522534424315), we get a palindrome (63864977946836).

The spelling of 51342443522521 in words is "fifty-one trillion, three hundred forty-two billion, four hundred forty-three million, five hundred twenty-two thousand, five hundred twenty-one".