56166749 has 2 divisors, whose sum is σ = 56166750. Its totient is φ = 56166748.

The previous prime is 56166731. The next prime is 56166791. The reversal of 56166749 is 94766165.

It is a happy number.

56166749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39601849 + 16564900 = 6293^2 + 4070^2 .

It is a cyclic number.

It is not a de Polignac number, because 56166749 - 2⁸ = 56166493 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56166449) 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, 28083374 + 28083375.

It is an arithmetic number, because the mean of its divisors is an integer number (28083375).

Almost surely, 2^56166749 is an apocalyptic number.

It is an amenable number.

56166749 is a deficient number, since it is larger than the sum of its proper divisors (1).

56166749 is an equidigital number, since it uses as much as digits as its factorization.

56166749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 56166749 is about 7494.4478782629. The cubic root of 56166749 is about 382.9655976026.

The spelling of 56166749 in words is "fifty-six million, one hundred sixty-six thousand, seven hundred forty-nine".