51612061 has 2 divisors, whose sum is σ = 51612062. Its totient is φ = 51612060.

The previous prime is 51612053. The next prime is 51612103. The reversal of 51612061 is 16021615.

51612061 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., 31416025 + 20196036 = 5605^2 + 4494^2 .

It is a cyclic number.

It is not a de Polignac number, because 51612061 - 2³ = 51612053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51612031) 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, 25806030 + 25806031.

It is an arithmetic number, because the mean of its divisors is an integer number (25806031).

Almost surely, 2^51612061 is an apocalyptic number.

It is an amenable number.

51612061 is a deficient number, since it is larger than the sum of its proper divisors (1).

51612061 is an equidigital number, since it uses as much as digits as its factorization.

51612061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 51612061 is about 7184.1534643965. The cubic root of 51612061 is about 372.3206012708.

Adding to 51612061 its reverse (16021615), we get a palindrome (67633676).

The spelling of 51612061 in words is "fifty-one million, six hundred twelve thousand, sixty-one".