51406601 has 2 divisors, whose sum is σ = 51406602. Its totient is φ = 51406600.

The previous prime is 51406583. The next prime is 51406637. The reversal of 51406601 is 10660415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49716601 + 1690000 = 7051^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 51406601 - 2¹⁰ = 51405577 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51406651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25703300 + 25703301.

It is an arithmetic number, because the mean of its divisors is an integer number (25703301).

Almost surely, 2^51406601 is an apocalyptic number.

It is an amenable number.

51406601 is a deficient number, since it is larger than the sum of its proper divisors (1).

51406601 is an equidigital number, since it uses as much as digits as its factorization.

51406601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 51406601 is about 7169.8396774265. The cubic root of 51406601 is about 371.8258931084.

The spelling of 51406601 in words is "fifty-one million, four hundred six thousand, six hundred one".