51120061 has 2 divisors, whose sum is σ = 51120062. Its totient is φ = 51120060.

The previous prime is 51120059. The next prime is 51120119. The reversal of 51120061 is 16002115.

It is a happy number.

51120061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45024100 + 6095961 = 6710^2 + 2469^2 .

It is a cyclic number.

It is not a de Polignac number, because 51120061 - 2¹ = 51120059 is a prime.

It is a super-2 number, since 2×51120061² = 5226521273287442, which contains 22 as substring.

Together with 51120059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51120661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25560030 + 25560031.

It is an arithmetic number, because the mean of its divisors is an integer number (25560031).

Almost surely, 2^51120061 is an apocalyptic number.

It is an amenable number.

51120061 is a deficient number, since it is larger than the sum of its proper divisors (1).

51120061 is an equidigital number, since it uses as much as digits as its factorization.

51120061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 51120061 is about 7149.8294385251. The cubic root of 51120061 is about 371.1337539587.

Adding to 51120061 its reverse (16002115), we get a palindrome (67122176).

The spelling of 51120061 in words is "fifty-one million, one hundred twenty thousand, sixty-one".