52405217 has 2 divisors, whose sum is σ = 52405218. Its totient is φ = 52405216.

The previous prime is 52405183. The next prime is 52405229. The reversal of 52405217 is 71250425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46840336 + 5564881 = 6844^2 + 2359^2 .

It is a cyclic number.

It is not a de Polignac number, because 52405217 - 2¹⁰ = 52404193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52407217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26202608 + 26202609.

It is an arithmetic number, because the mean of its divisors is an integer number (26202609).

Almost surely, 2^52405217 is an apocalyptic number.

It is an amenable number.

52405217 is a deficient number, since it is larger than the sum of its proper divisors (1).

52405217 is an equidigital number, since it uses as much as digits as its factorization.

52405217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 52405217 is about 7239.1447699297. The cubic root of 52405217 is about 374.2181446350.

The spelling of 52405217 in words is "fifty-two million, four hundred five thousand, two hundred seventeen".