51655411547 has 4 divisors (see below), whose sum is σ = 51900224136. Its totient is φ = 51410598960.

The previous prime is 51655411543. The next prime is 51655411553. The reversal of 51655411547 is 74511455615.

51655411547 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.

It is a cyclic number.

It is not a de Polignac number, because 51655411547 - 2² = 51655411543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51655411498 and 51655411507.

It is not an unprimeable number, because it can be changed into a prime (51655411543) 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, 122405978 + ... + 122406399.

It is an arithmetic number, because the mean of its divisors is an integer number (12975056034).

Almost surely, 2^51655411547 is an apocalyptic number.

51655411547 is a deficient number, since it is larger than the sum of its proper divisors (244812589).

51655411547 is a wasteful number, since it uses less digits than its factorization.

51655411547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244812588.

The product of its digits is 420000, while the sum is 44.

The spelling of 51655411547 in words is "fifty-one billion, six hundred fifty-five million, four hundred eleven thousand, five hundred forty-seven".