56000039 has 2 divisors, whose sum is σ = 56000040. Its totient is φ = 56000038.

The previous prime is 56000029. The next prime is 56000041. The reversal of 56000039 is 93000065.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56000039 - 2¹⁶ = 55934503 is a prime.

Together with 56000041, 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 = 55999978 and 56000023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28000019 + 28000020.

It is an arithmetic number, because the mean of its divisors is an integer number (28000020).

Almost surely, 2^56000039 is an apocalyptic number.

56000039 is a deficient number, since it is larger than the sum of its proper divisors (1).

56000039 is an equidigital number, since it uses as much as digits as its factorization.

56000039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 56000039 is about 7483.3173793445. The cubic root of 56000039 is about 382.5863253691.

The spelling of 56000039 in words is "fifty-six million, thirty-nine", and thus it is an aban number and an uban number.