52409993 has 2 divisors, whose sum is σ = 52409994. Its totient is φ = 52409992.

The previous prime is 52409983. The next prime is 52410023. The reversal of 52409993 is 39990425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28858384 + 23551609 = 5372^2 + 4853^2 .

It is a cyclic number.

It is not a de Polignac number, because 52409993 - 2⁸ = 52409737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52409993.

It is not a weakly prime, because it can be changed into another prime (52409953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26204996 + 26204997.

It is an arithmetic number, because the mean of its divisors is an integer number (26204997).

Almost surely, 2^52409993 is an apocalyptic number.

It is an amenable number.

52409993 is a deficient number, since it is larger than the sum of its proper divisors (1).

52409993 is an equidigital number, since it uses as much as digits as its factorization.

52409993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 52409993 is about 7239.4746356348. The cubic root of 52409993 is about 374.2295125336.

The spelling of 52409993 in words is "fifty-two million, four hundred nine thousand, nine hundred ninety-three".