51541013 has 2 divisors, whose sum is σ = 51541014. Its totient is φ = 51541012.

The previous prime is 51540989. The next prime is 51541019. The reversal of 51541013 is 31014515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51509329 + 31684 = 7177^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 51541013 - 2⁸ = 51540757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51541019) 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 as a sum of consecutive naturals, namely, 25770506 + 25770507.

It is an arithmetic number, because the mean of its divisors is an integer number (25770507).

Almost surely, 2^51541013 is an apocalyptic number.

It is an amenable number.

51541013 is a deficient number, since it is larger than the sum of its proper divisors (1).

51541013 is an equidigital number, since it uses as much as digits as its factorization.

51541013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51541013 is about 7179.2069896333. The cubic root of 51541013 is about 372.1496801018.

Adding to 51541013 its reverse (31014515), we get a palindrome (82555528).

The spelling of 51541013 in words is "fifty-one million, five hundred forty-one thousand, thirteen".