56195819 has 2 divisors, whose sum is σ = 56195820. Its totient is φ = 56195818.

The previous prime is 56195791. The next prime is 56195833. The reversal of 56195819 is 91859165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56195819 is a prime.

It is a super-2 number, since 2×56195819² = 6315940146161522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56195819.

It is not a weakly prime, because it can be changed into another prime (56195869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28097909 + 28097910.

It is an arithmetic number, because the mean of its divisors is an integer number (28097910).

Almost surely, 2^56195819 is an apocalyptic number.

56195819 is a deficient number, since it is larger than the sum of its proper divisors (1).

56195819 is an equidigital number, since it uses as much as digits as its factorization.

56195819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 44.

The square root of 56195819 is about 7496.3870631125. The cubic root of 56195819 is about 383.0316561990.

The spelling of 56195819 in words is "fifty-six million, one hundred ninety-five thousand, eight hundred nineteen".