56297639 has 2 divisors, whose sum is σ = 56297640. Its totient is φ = 56297638.

The previous prime is 56297611. The next prime is 56297663. The reversal of 56297639 is 93679265.

56297639 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 56297639 - 2²⁰ = 55249063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56297593 and 56297602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56297669) 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, 28148819 + 28148820.

It is an arithmetic number, because the mean of its divisors is an integer number (28148820).

Almost surely, 2^56297639 is an apocalyptic number.

56297639 is a deficient number, since it is larger than the sum of its proper divisors (1).

56297639 is an equidigital number, since it uses as much as digits as its factorization.

56297639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 47.

The square root of 56297639 is about 7503.1752611811. The cubic root of 56297639 is about 383.2628522383.

The spelling of 56297639 in words is "fifty-six million, two hundred ninety-seven thousand, six hundred thirty-nine".