51701238401 has 2 divisors, whose sum is σ = 51701238402. Its totient is φ = 51701238400.

The previous prime is 51701238377. The next prime is 51701238431. The reversal of 51701238401 is 10483210715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42442180225 + 9259058176 = 206015^2 + 96224^2 .

It is a cyclic number.

It is not a de Polignac number, because 51701238401 - 2¹⁰ = 51701237377 is a prime.

It is not a weakly prime, because it can be changed into another prime (51701238431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25850619200 + 25850619201.

It is an arithmetic number, because the mean of its divisors is an integer number (25850619201).

Almost surely, 2^51701238401 is an apocalyptic number.

It is an amenable number.

51701238401 is a deficient number, since it is larger than the sum of its proper divisors (1).

51701238401 is an equidigital number, since it uses as much as digits as its factorization.

51701238401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 51701238401 in words is "fifty-one billion, seven hundred one million, two hundred thirty-eight thousand, four hundred one".