56186789 has 2 divisors, whose sum is σ = 56186790. Its totient is φ = 56186788.

The previous prime is 56186747. The next prime is 56186797. The reversal of 56186789 is 98768165.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40322500 + 15864289 = 6350^2 + 3983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56186789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56186189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28093394 + 28093395.

It is an arithmetic number, because the mean of its divisors is an integer number (28093395).

Almost surely, 2^56186789 is an apocalyptic number.

It is an amenable number.

56186789 is a deficient number, since it is larger than the sum of its proper divisors (1).

56186789 is an equidigital number, since it uses as much as digits as its factorization.

56186789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 56186789 is about 7495.7847487771. The cubic root of 56186789 is about 383.0111388889.

The spelling of 56186789 in words is "fifty-six million, one hundred eighty-six thousand, seven hundred eighty-nine".