51086396529 has 81 divisors (see below), whose sum is σ = 88088929227. Its totient is φ = 28446350688.

The previous prime is 51086396483. The next prime is 51086396551. The reversal of 51086396529 is 92569368015.

It is a happy number.

The square root of 51086396529 is 226023.

It is a perfect power (a square), and thus also a powerful number.

51086396529 is a `hidden beast` number, since 5 + 1 + 0 + 86 + 39 + 6 + 529 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47579388129 + 3507008400 = 218127^2 + 59220^2 .

It is not a de Polignac number, because 51086396529 - 2¹¹ = 51086394481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51086396929) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 223084587 + ... + 223084815.

Almost surely, 2^51086396529 is an apocalyptic number.

51086396529 is the 226023-rd square number.

51086396529 is the 113012-nd centered octagonal number.

It is an amenable number.

51086396529 is a deficient number, since it is larger than the sum of its proper divisors (37002532698).

51086396529 is an equidigital number, since it uses as much as digits as its factorization.

51086396529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 51086396529 in words is "fifty-one billion, eighty-six million, three hundred ninety-six thousand, five hundred twenty-nine".