51061081 has 16 divisors (see below), whose sum is σ = 57746304. Its totient is φ = 44884224.

The previous prime is 51061063. The next prime is 51061093. The reversal of 51061081 is 18016015.

It is not a de Polignac number, because 51061081 - 2²⁵ = 17506649 is a prime.

It is a super-2 number, since 2×51061081² = 5214467985777122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51061051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15295 + ... + 18331.

It is an arithmetic number, because the mean of its divisors is an integer number (3609144).

Almost surely, 2^51061081 is an apocalyptic number.

It is an amenable number.

51061081 is a deficient number, since it is larger than the sum of its proper divisors (6685223).

51061081 is a wasteful number, since it uses less digits than its factorization.

51061081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 51061081 is about 7145.7036742367. The cubic root of 51061081 is about 370.9909666189.

Adding to 51061081 its reverse (18016015), we get a palindrome (69077096).

The spelling of 51061081 in words is "fifty-one million, sixty-one thousand, eighty-one".