51801241 has 2 divisors, whose sum is σ = 51801242. Its totient is φ = 51801240.

The previous prime is 51801181. The next prime is 51801247. The reversal of 51801241 is 14210815.

51801241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47817225 + 3984016 = 6915^2 + 1996^2 .

It is a cyclic number.

It is not a de Polignac number, because 51801241 - 2¹⁵ = 51768473 is a prime.

It is not a weakly prime, because it can be changed into another prime (51801247) 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, 25900620 + 25900621.

It is an arithmetic number, because the mean of its divisors is an integer number (25900621).

Almost surely, 2^51801241 is an apocalyptic number.

It is an amenable number.

51801241 is a deficient number, since it is larger than the sum of its proper divisors (1).

51801241 is an equidigital number, since it uses as much as digits as its factorization.

51801241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 51801241 is about 7197.3078994858. The cubic root of 51801241 is about 372.7749506745.

The spelling of 51801241 in words is "fifty-one million, eight hundred one thousand, two hundred forty-one".