56239387 has 2 divisors, whose sum is σ = 56239388. Its totient is φ = 56239386.

The previous prime is 56239369. The next prime is 56239397. The reversal of 56239387 is 78393265.

56239387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56239387 - 2¹¹ = 56237339 is a prime.

It is a super-3 number, since 3×56239387³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (56239327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28119693 + 28119694.

It is an arithmetic number, because the mean of its divisors is an integer number (28119694).

Almost surely, 2^56239387 is an apocalyptic number.

56239387 is a deficient number, since it is larger than the sum of its proper divisors (1).

56239387 is an equidigital number, since it uses as much as digits as its factorization.

56239387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 56239387 is about 7499.2924332900. The cubic root of 56239387 is about 383.1306173714.

The spelling of 56239387 in words is "fifty-six million, two hundred thirty-nine thousand, three hundred eighty-seven".