51554442352355 has 4 divisors (see below), whose sum is σ = 61865330822832. Its totient is φ = 41243553881880.

The previous prime is 51554442352351. The next prime is 51554442352393. The reversal of 51554442352355 is 55325324445515.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51554442352355 - 2² = 51554442352351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51554442352297 and 51554442352306.

It is not an unprimeable number, because it can be changed into a prime (51554442352351) 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, 5155444235231 + ... + 5155444235240.

It is an arithmetic number, because the mean of its divisors is an integer number (15466332705708).

Almost surely, 2^{51554442352355} is an apocalyptic number.

51554442352355 is a deficient number, since it is larger than the sum of its proper divisors (10310888470477).

51554442352355 is a wasteful number, since it uses less digits than its factorization.

51554442352355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310888470476.

The product of its digits is 36000000, while the sum is 53.

The spelling of 51554442352355 in words is "fifty-one trillion, five hundred fifty-four billion, four hundred forty-two million, three hundred fifty-two thousand, three hundred fifty-five".