51245552055 has 8 divisors (see below), whose sum is σ = 81992883312. Its totient is φ = 27330961088.

The previous prime is 51245552053. The next prime is 51245552147. The reversal of 51245552055 is 55025554215.

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 51245552055 - 2¹ = 51245552053 is a prime.

It is a super-2 number, since 2×51245552055² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51245552053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708185054 + ... + 1708185083.

It is an arithmetic number, because the mean of its divisors is an integer number (10249110414).

Almost surely, 2^51245552055 is an apocalyptic number.

51245552055 is a deficient number, since it is larger than the sum of its proper divisors (30747331257).

51245552055 is a wasteful number, since it uses less digits than its factorization.

51245552055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416370145.

The product of its (nonzero) digits is 250000, while the sum is 39.

The spelling of 51245552055 in words is "fifty-one billion, two hundred forty-five million, five hundred fifty-two thousand, fifty-five".