56169493 has 2 divisors, whose sum is σ = 56169494. Its totient is φ = 56169492.

The previous prime is 56169469. The next prime is 56169497. The reversal of 56169493 is 39496165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36747844 + 19421649 = 6062^2 + 4407^2 .

It is a cyclic number.

It is not a de Polignac number, because 56169493 - 2⁵ = 56169461 is a prime.

It is equal to p_3347899 and since 56169493 and 3347899 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56169497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28084746 + 28084747.

It is an arithmetic number, because the mean of its divisors is an integer number (28084747).

Almost surely, 2^56169493 is an apocalyptic number.

It is an amenable number.

56169493 is a deficient number, since it is larger than the sum of its proper divisors (1).

56169493 is an equidigital number, since it uses as much as digits as its factorization.

56169493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The square root of 56169493 is about 7494.6309448831. The cubic root of 56169493 is about 382.9718340355.

The spelling of 56169493 in words is "fifty-six million, one hundred sixty-nine thousand, four hundred ninety-three".