51551056575 has 36 divisors (see below), whose sum is σ = 92399130720. Its totient is φ = 27474405120.

The previous prime is 51551056573. The next prime is 51551056619. The reversal of 51551056575 is 57565015515.

51551056575 is a `hidden beast` number, since 5 + 1 + 5 + 5 + 10 + 565 + 75 = 666.

51551056575 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51551056575 - 2¹ = 51551056573 is a prime.

It is a super-2 number, since 2×51551056575² (a number of 22 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 51551056575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51551056573) 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, 239671 + ... + 400679.

It is an arithmetic number, because the mean of its divisors is an integer number (2566642520).

Almost surely, 2^51551056575 is an apocalyptic number.

51551056575 is a deficient number, since it is larger than the sum of its proper divisors (40848074145).

51551056575 is a wasteful number, since it uses less digits than its factorization.

51551056575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162448 (or 162440 counting only the distinct ones).

The product of its (nonzero) digits is 656250, while the sum is 45.

The spelling of 51551056575 in words is "fifty-one billion, five hundred fifty-one million, fifty-six thousand, five hundred seventy-five".