51533086081 has 9 divisors (see below), whose sum is σ = 51943333449. Its totient is φ = 51126058944.

The previous prime is 51533086079. The next prime is 51533086097. The reversal of 51533086081 is 18068033515.

The square root of 51533086081 is 227009.

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

It can be written as a sum of positive squares in 4 ways, for example, as 493239681 + 51039846400 = 22209^2 + 225920^2 .

It is not a de Polignac number, because 51533086081 - 2¹ = 51533086079 is a prime.

It is a super-2 number, since 2×51533086081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51533086001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31099405 + ... + 31101061.

Almost surely, 2^51533086081 is an apocalyptic number.

51533086081 is the 227009-th square number.

51533086081 is the 113505-th centered octagonal number.

It is an amenable number.

51533086081 is a deficient number, since it is larger than the sum of its proper divisors (410247368).

51533086081 is an frugal number, since it uses more digits than its factorization.

51533086081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 51533086081 in words is "fifty-one billion, five hundred thirty-three million, eighty-six thousand, eighty-one".