52739993 has 2 divisors, whose sum is σ = 52739994. Its totient is φ = 52739992.

The previous prime is 52739987. The next prime is 52740013. The reversal of 52739993 is 39993725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 1646089 = 7148^2 + 1283^2 .

It is a cyclic number.

It is not a de Polignac number, because 52739993 - 2⁸ = 52739737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52739963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26369996 + 26369997.

It is an arithmetic number, because the mean of its divisors is an integer number (26369997).

Almost surely, 2^52739993 is an apocalyptic number.

It is an amenable number.

52739993 is a deficient number, since it is larger than the sum of its proper divisors (1).

52739993 is an equidigital number, since it uses as much as digits as its factorization.

52739993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 459270, while the sum is 47.

The square root of 52739993 is about 7262.2305802005. The cubic root of 52739993 is about 375.0133162679.

The spelling of 52739993 in words is "fifty-two million, seven hundred thirty-nine thousand, nine hundred ninety-three".