52400039 has 2 divisors, whose sum is σ = 52400040. Its totient is φ = 52400038.

The previous prime is 52400017. The next prime is 52400041. The reversal of 52400039 is 93000425.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52400039 is a prime.

It is a Sophie Germain prime.

Together with 52400041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 52399987 and 52400023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52408039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26200019 + 26200020.

It is an arithmetic number, because the mean of its divisors is an integer number (26200020).

Almost surely, 2^52400039 is an apocalyptic number.

52400039 is a deficient number, since it is larger than the sum of its proper divisors (1).

52400039 is an equidigital number, since it uses as much as digits as its factorization.

52400039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 52400039 is about 7238.7871221635. The cubic root of 52400039 is about 374.2058191104.

The spelling of 52400039 in words is "fifty-two million, four hundred thousand, thirty-nine".