51061051055475 has 36 divisors (see below), whose sum is σ = 91462302647352. Its totient is φ = 27230688576000.

The previous prime is 51061051055471. The next prime is 51061051055507. The reversal of 51061051055475 is 57455015016015.

51061051055475 is a `hidden beast` number, since 5 + 1 + 0 + 6 + 10 + 5 + 10 + 554 + 75 = 666.

It is not a de Polignac number, because 51061051055475 - 2² = 51061051055471 is a prime.

It is a super-2 number, since 2×51061051055475² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 51061051055475.

It is not an unprimeable number, because it can be changed into a prime (51061051055471) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4516441 + ... + 11068890.

It is an arithmetic number, because the mean of its divisors is an integer number (2540619517982).

Almost surely, 2^{51061051055475} is an apocalyptic number.

51061051055475 is a deficient number, since it is larger than the sum of its proper divisors (40401251591877).

51061051055475 is a wasteful number, since it uses less digits than its factorization.

51061051055475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15599908 (or 15599900 counting only the distinct ones).

The product of its (nonzero) digits is 525000, while the sum is 45.

The spelling of 51061051055475 in words is "fifty-one trillion, sixty-one billion, fifty-one million, fifty-five thousand, four hundred seventy-five".