56843749 has 2 divisors, whose sum is σ = 56843750. Its totient is φ = 56843748.

The previous prime is 56843747. The next prime is 56843789. The reversal of 56843749 is 94734865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53919649 + 2924100 = 7343^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 56843749 - 2¹ = 56843747 is a prime.

Together with 56843747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 56843699 and 56843708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56843747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28421874 + 28421875.

It is an arithmetic number, because the mean of its divisors is an integer number (28421875).

Almost surely, 2^56843749 is an apocalyptic number.

It is an amenable number.

56843749 is a deficient number, since it is larger than the sum of its proper divisors (1).

56843749 is an equidigital number, since it uses as much as digits as its factorization.

56843749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The square root of 56843749 is about 7539.4793586825. The cubic root of 56843749 is about 384.4981350838.

The spelling of 56843749 in words is "fifty-six million, eight hundred forty-three thousand, seven hundred forty-nine".