56105149 has 2 divisors, whose sum is σ = 56105150. Its totient is φ = 56105148.

The previous prime is 56105143. The next prime is 56105167. The reversal of 56105149 is 94150165.

56105149 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., 42341049 + 13764100 = 6507^2 + 3710^2 .

It is a cyclic number.

It is not a de Polignac number, because 56105149 - 2¹⁵ = 56072381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56105149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56105143) 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, 28052574 + 28052575.

It is an arithmetic number, because the mean of its divisors is an integer number (28052575).

Almost surely, 2^56105149 is an apocalyptic number.

It is an amenable number.

56105149 is a deficient number, since it is larger than the sum of its proper divisors (1).

56105149 is an equidigital number, since it uses as much as digits as its factorization.

56105149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 56105149 is about 7490.3370418159. The cubic root of 56105149 is about 382.8255425538.

The spelling of 56105149 in words is "fifty-six million, one hundred five thousand, one hundred forty-nine".